Solar Cooler: Complete Guide To Choose The Best Solar Cooler

Researchers have been trying to figure out the most effective method of cooling for humans for quite some time. Now, they've created solar coolers that are both practical and sustainable.

But how well-versed are you in the lore of solar coolers? In this article, you'll learn everything you need to know about solar coolers, from the different varieties out there to the pros and cons of using one.

To begin, let's agree on what exactly a solar cooler is. Why do solar coolers seem to be all the rage recently? Let's jump right in; there's no need to preface anything.

What is Solar Cooler?

Solar air coolers are a combination of highly efficient cooling systems and solar thermal panels, which offer the best of both worlds. They can provide you with the cooling power of an air conditioner without the hassle of filling it with electricity.

Besides, solar-powered coolers are portable and can be used in places without access to power sources, such as picnics, beaches, RVs, or boats.

Solar air coolers are more cost-effective and environmentally friendly than their electric counterparts. Additionally, they also save money on monthly electric bills.

Types of Solar Coolers

Passive Solar Coolers

Passive solar cooling is a type of solar cooling that does not directly use solar thermal energy to create a cool environment or drive any cooling processes.

Instead, passive solar coolers use solar building designs, such as cool roofs, radiant barriers, and air gaps to reduce heat transfer into a building in the summer and improve the removal of unwanted heat.

Heat transfer is achieved through conduction, convective heat transfer, and thermal radiation from the sun. Solar air coolers work by pulling hot and dry air from outside and pushing it through moist cooling pads, which in turn converts the dry air into fresh cool air.

These coolers are effective at reducing overheating in buildings during the summer months.

Active Solar Coolers

Active solar coolers use solar energy to cool air, either by utilizing solar cells to convert radiant energy into electricity or by employing concentrating collectors to generate heat.

Solar-powered coolers can be used to produce fresh, cool air inside a building or vehicle. Air is collected from outside and pushed through a wet permeable layer where it is cooled, resulting in evaporation and a drop in temperature.

Active solar coolers are often permanent setups that are the best option for those looking for a more permanent solution. They are more cost-effective than portable and disposable solar coolers, which must be replaced after some use.

Portable Solar Coolers

Portable solar coolers are solar devices that directly use the power of the sun to cool an object. They are portable and lightweight and can be moved from one location to another to ensure a constant source of cooling.

Portable solar coolers typically work by using flat-plate solar collectors to efficiently and cost-effectively heat water above 190°F (88°C). This means that they are effective at cooling objects down to below the temperature of the surrounding air.

Some coolers have power banks that can be charged directly from a solar panel, making them able to operate for longer durations without being plugged into an external power source, especially on a camping trip.

Hybrid Solar Coolers

Hybrid solar coolers use the sun's power to keep the cooler's interior cool. Solar coolers feature a solar panel that is positioned on the top cover of the unit and is covered by a piece of plastic, glass, or other similar material for protection.

Hybrid solar coolers run on electricity stored in a lithium battery, not directly from the sun. As such, they require an electric power source for an adequate run time.

Typically, hybrid solar coolers run off solar power generated by a photovoltaic solar panel installed on the cooler’s top cover. This enables producers to preserve the quality of the evening milk while maintaining a consistent temperature during production.

Built-in Solar Coolers

Built-in solar coolers are a type of cooler that runs on electricity stored in an off-grid battery, not directly from the sun. Built-in solar coolers typically feature two separate chambers with individual temperature settings.

The coolers may feature a solar panel on the top cover to convert solar energy into direct current. This panel can then power the cooler's internal cooling system.

Built-in solar coolers are designed to prevent the contents from becoming warm in hot weather, keeping food and beverages at the desired temperature for longer periods of time than traditional coolers.

How much does a Solar Cooler cost?

The cost of a solar cooler can vary depending on the brand, size, features, and retailer from which it is purchased. Generally, solar coolers can range from a few hundred dollars to over a thousand dollars.

Some smaller and simpler models may cost around $300 to $500, while larger and more advanced models can cost over $1,000.

How to choose the best Solar Cooler?

When you are looking for the best solar-powered cooler, you need to consider a few factors.

Capacity

When looking for the best solar air cooler, you want to ensure that you choose one with a capacity of cool air. This will allow you to keep cool during warm weather and stay comfortable as the temperatures rise.

A good solar air cooler should have a tank capacity of 35 litres or more. Solar coolers with larger tanks can stay cool for longer periods of time and provide you with continuous comfort.

If you are looking for the perfect solar cooler, consider choosing one with a variable tank capacity of up to 20 liters. This allows you to enjoy cooler air for shorter durations without constantly having to refill the cooling tank.

Cooling performance

Solar coolers use a simple evaporative cooling principle to cool down temperatures. They work by using solar energy or off-grid battery power to lower the temperature of a coolant, such as water or Freon-based refrigerant.

Solar coolers convert solar energy into DC power that is used to power the refrigeration system of the cooler. They are also economical as they eliminate the consumption of AC power and save on the costs of buying and operating an RV air cooler.

Coolers can be efficient and cost-effective when they are designed properly.

Power source

Solar coolers are portable power stations that are powered by solar energy. These coolers use solar panels to convert solar power into DC power directly.

They have a solar panel that converts solar energy into direct current (DC) power. This cooling system uses an air-cooled compressor, which works by compressing air and then releasing the cooled air back into the cooler.

This cool air is stored in a chilled water reservoir for continuous operation. Portable solar coolers use DC refrigeration systems to cool their internal components.

They can be used both indoors and outdoors and can be mounted on the wall or on the roof of a building or campsite for convenience.

Durability

When choosing the best solar cooler, you must consider the size and features of the unit. The best high-quality solar coolers are durable and can handle a lot of abuse.

Some coolers have built-in fan systems that help to circulate the air. It's also important to consider the price and quality of the cooling system, as well as the performance of the cooler in terms of cooling capacity, efficiency, and other factors.

In addition to being durable and efficient, they are easy to install and operate at an affordable cost.

Portability

A solar cooler is a portable cooling device that uses solar power to cool down a wide range of items, including food, beverages, and medications. A portable cooler features a solar panel on top that collects energy from the sun to power the unit.

The coolers are lightweight and portable, allowing for easy transportation and setup. They are often designed to be portable, solar panel-enabled vans or trucks.

Coolers also come in various sizes, with capacities ranging from 20 to 60 litres. Some options feature air throw coverage of up to 250m or more.

Features

A solar cooler is a device that uses evaporative cooling to cool down the air. Solar coolers use solar cells to convert radiant energy from the sun into electricity.

This electricity is stored in an internal battery and used to power the fan. This solar fridge can be effective in offices, homes, and even cars. It works by constantly circulating cool air around the warm and hot sources.

This cooling process results in a lower internal temperature of the building or vehicle. Besides, solar coolers use wet and cooling pads, which absorb heat from the surrounding air and release it slowly back into the atmosphere as cold air.

Brand reputation and customer reviews

ACOPower is a popular brand for solar-powered coolers as it offers a range of models to suit different needs and budgets. Their coolers can keep the contents of a cooler chilled even in hot weather, eliminating the hassle of constantly replacing ice.

They also boast a variety of features, such as lighted storage compartments, locking mechanisms, and removable lids. Some coolers even come equipped with built-in Bluetooth speakers for adding some entertainment to outdoor barbeques or parties.

However, it is important to do thorough research before making the purchase decision. Customers should research the coolers available in their price range and read reviews from other customers to get an idea of what to expect from each model.

Price

A solar air cooler is a coolant that uses the power of the sun to cool air. It is portable, lightweight, and can run on solar power. Currently, solar coolers cost around $1,100.

They are available at various price points, depending on the size and functionality of the cooler. The purchase of a solar power cooler is cheaper as you will get your money back in a short period.

Solar coolers are economical as they totally eliminate the consumption of AC power and therefore reduce energy costs. On average, solar coolers save around 75% in energy costs compared to conventional cooling systems.

How to install the Solar Cooler?

Choose a location

Before you install a solar cooler, it is important to consider the location. Ideally, you want to install the solar cooler in an area that gets good sunlight. You can do this by placing the solar cooler in an open space that is free from obstructions.

If possible, opt for a location with plenty of natural light. Additionally, select the right size solar cooler to suit your window size. When selecting the size of your solar cooler, make sure to account for the size of the window.

The best way to install a solar cooler is by using a mounting kit which comes with detailed instructions and necessary hardware.

Unpack and inspect

After unpacking the solar cooler, you must inspect it for any damages or defects. You should check the cooling capacity of 9.1 kW and the condensing unit with a cooling capacity of 1.4 kWh at 46°C ambient and -15°C evaporating temperature.

Besides, you must ensure that the cooler can run on 220 VAC when electricity is available. Next, you must verify the isolation of 7 cm and the condensing unit mounted on the side of the cooler.

Connect power source

A solar-powered cooler can be powered through a wall outlet (via a power adapter), an alternative power source such as a 12v or AC outlet, or a portable power bank such as a Jackery battery.

When in use, the cooler directly draws energy from solar panels and transfers it to the compressor. Some coolers have power banks that can be detached from the appliance and charged directly from solar panels or batteries.

These coolers are able to store energy from the solar panel or battery and use it when required. In this way, they can run continuously without requiring an external power source.

Turn on and set the temperature

Solar panels, batteries, or a portable power station power solar coolers. You can turn them on by connecting them to a wall outlet (AC/120v or DC), a 12-volt outlet, or a portable power bank.

The most common way of setting the temperature of a solar cooler is by changing the settings on the control panel. To set the temperature of a solar cooler, you will need to enter the cooling and heating preferences and adjust them to your needs.

Load contents

Solar coolers employ a simple evaporative cooling principle to lower temperature by collecting dry and warm air from the outside and pushing it inside using a turbine.

Water is pumped from the bottom pan to the top and left to flow down on the cooling pads to convert the dry air into fresh cool air. Solar coolers use blowers to pull the air through the cooling pads and cool it efficiently.

They are usually easy to install on the roof or in walls, making them ideal for spaces that don't have much space. Solar coolers can also be used as supplementary solar collectors, which can provide additional sun-sustainable heating or power.

Position Solar panels

Solar coolers can be easily installed by positioning solar panels on the top cover of the cooler, with an adjustable mount mechanism to allow for optimal output.

These coolers are designed to maximize solar panel efficiency by tilting the panel to face more directly towards the sun's rays for maximum efficiency. Once solar panel installation is complete, the coolers can power up in a few hours and start cooling within a day.

Solar coolers convert solar energy into direct current power that is used to run refrigeration systems.

Maintenance tips for Solar Coolers

Keep Solar panels clean

Cleaning solar panels regularly is essential to ensure the best performance of your solar panel system. Regularly cleaning solar panels can help prevent damage and maintain their efficiency.

To clean solar panels, use a soft cloth and mild soap to wipe off the panel surface. For stubborn dirt, use a solution of one part vinegar to 10 parts water.

Additionally, avoid using metal-based cleaners or any type of abrasive material when cleaning solar panels. Instead, use a solution of 1 part white vinegar to 10 parts water for best results.

By cleaning solar panels regularly and keeping them clean, you can maximize the lifespan of your solar panel system and reduce costs over time.

Check wiring and connections

Solar coolers require connection to a 12V refrigeration unit via electrical plugs. They contain a power conditioning system to regulate voltage and facilitate uninterrupted power supply.

A battery backup may be added to the system to ensure the cooler remains cold during power outages. Some solar coolers also have a power inverter to power the cooler when at home; this allows the cooler to operate without solar power.

The solar panel can be disconnected from the unit and connected to a car battery for charging, allowing it to continue cooling when there is no solar energy available.

Inspect and clean the interior

It is crucial to regularly inspect solar coolers and ensure they work properly. You must check the evaporator plate and the plastic grid to ensure they are clean and free of debris.

You should also ensure that the stainless steel milk churns are filled with milk and in the correct positions. After cleaning, vacuum and mop the cooler's interior to remove dust and debris.

Lastly, you must inspect for any damage or signs of wear and tear.

Keep vents unobstructed

When it comes to a solar freezer, it's essential that the vents are unobstructed and that they are able to circulate air freely. For coolers mounted on roofs or walls, fasteners should be secured in place and the cooler itself should be fixed securely in place. The coolers can also be easily cooled on the roof or wall using special coolers designed for solar cooling.

Store in a dry place

Solar coolers are solar-powered cooling devices designed to keep perishable items cool, such as milk and other dairy products. They are typically portable, lightweight, and easy to use.

These coolers can be simple metal boxes with a solar panel on the roof that absorbs solar energy and converts it into heat. Or, they can be more sophisticated electric coolers that are capable of holding large volumes of liquid.

Regardless of their design, solar coolers must be stored in a dry place to prevent corrosion and other damage to the device.

Another important maintenance tip for solar coolers is to store them in a dry place to prevent corrosion and other damage to the device. This will help ensure the cooler’s longevity and functionality over time.

Keep the lid closed

To ensure the solar fridge stays cool, it's important to keep the lid closed. This will reduce the amount of sunlight that enters the cooler, which will help to keep the internal temperature consistent.

It's also a good idea to make sure the cooler is level so that air circulates evenly and doesn't build up in any areas. Finally, solar coolers need to be cleaned regularly by removing all the dirt, dust, and leaves.

Pros & Cons of Solar Coolers

Pros

Solar coolers are a great way of keeping items cool in hot climates. They enable producers to preserve the quality of food products and reduce waste.

Solar coolers offer a 100% satisfaction guarantee, which makes them an attractive investment for businesses looking to safeguard their production and reduce costs. In addition to cooler items, solar coolers can also help to keep building surfaces cool and increase comfort in hot temperatures.

Solar coolers are an important part of designing a zero-energy building in a hot climate. They help to reduce the need for electric cooling or heating, which can be expensive and energy-intensive.

By using solar coolers, buildings can save on energy costs and operate more efficiently, while still maintaining acceptable temperature levels.

Overall, if you are looking for a cost-effective and environmentally-friendly solution for keeping your products cool in hot climates, solar coolers may be the best option for you.

Cons

Solar coolers can be expensive to maintain and operate, as they require high-temperature heat input from concentrating solar collectors. These coolers must be kept out of direct sunlight to function properly.

Additionally, solar coolers require high power inputs which may not be readily available in rural areas. To overcome this issue, solar coolers are often connected to an electric grid or another power source for operation.

However, solar coolers are still subject to the challenges of being inefficient and expensive to run, requiring a significant upfront capital investment for their operation and maintenance.

Bottom Line

A solar-powered cooler is a portable, self-contained cooler that uses solar energy to cool the contents. It’s a great way to stay cool when camping or travelling and it requires no power source or electricity to function.

If you want to learn more about solar cooler technology and how it works, this guide is for you. We also provided tips on maintaining solar cooler performance so they last as long as possible. Get started with a solar cooler today with our guide!

Frequently Asked Questions

How long will my Solar Cooler last?

The lifespan of a solar cooler can vary depending on the quality of the components, the usage frequency, and the maintenance of the unit. Generally, a well-maintained solar cooler can last for several years or even a decade.

The battery used in the solar cooler will typically have a limited lifespan of around 3-5 years, and the solar panels can last up to 25 years with proper care and maintenance.

Is it better to use a box or a tube for the Solar Cooler?

The decision to use a box or a tube for a solar cooler depends on various factors, including the size and capacity of the cooler, the intended use, and personal preferences.

A box-shaped solar cooler is typically more versatile and can hold more items, making it a better choice for larger gatherings or longer trips. The box-shaped cooler can also be used as a regular cooler when the solar panel is not in use, making it more versatile.

On the other hand, a tube-shaped solar cooler can be more compact and easier to carry, making it a better choice for shorter trips or when space is limited.

The tube-shaped design also allows for more efficient use of the solar panel, as it can be angled to maximize sunlight exposure.

Which brands are the best when it comes to Solar Coolers?

When it comes to solar-powered coolers, the top three brands that you should consider are ARB, ACOPower, and GoSun. These brands are considered to be well-known and highly rated for their solar-powered coolers.

Each of these brands offers models that vary in size and price, with the ability to set the temperature of each chamber individually. Additionally, all three of these brands have standout engineering that makes them stand out from the competition.

Which type of Solar Cooler is the best for me?

If you're looking for the perfect solar cooler, then a portable solar generator may be the best option for you. Portable solar generators are small devices that convert solar energy into electrical power, which then can be used to power common appliances such as solar coolers.

Portable solar generators can be attached to anything, making them easy to take with you wherever you go. Plus, by using solar power to power the cooler, you can reduce the amount of energy that you use overall.