solar air conditioner

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Air Conditioning Air conditioning is the process of altering the properties of air (primarily temperature and humidity) to more favourable conditions. More generally, air conditioning can refer to any form of technological cooling, heating, ventilation, or disinfection that modifies the condition of air. An air conditioner :AC or A/C, is a major or home appliance, system, or mechanism designed to change the air temperature and humidity within an area (used for cooling and sometimes heating depending on the air properties at a given time).

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Page 1: Solar Air Conditioner

Air Conditioning

Air conditioning is the process of altering the properties of air (primarily temperature and humidity) to more favourable conditions.

More generally, air conditioning can refer to any form of technological cooling, heating, ventilation, or disinfection that modifies the condition of air.

An air conditioner :AC or A/C, is a major or home appliance, system, or mechanism designed to change the air temperature and humidity within an area (used for cooling and sometimes heating depending on the air properties at a given time).

Page 2: Solar Air Conditioner

Window and Split-system AC Units A window air conditioner unit implements a

complete air conditioner in a small space. The units are made small enough to fit into a standard window frame. You close the window down on the unit, plug it in and turn it on to get cool air. If you take the cover off of an unplugged window unit, you'll find that it contains: A compressor An expansion valve A hot coil (on the outside) A chilled coil (on the inside) Two fans A control unit

Page 3: Solar Air Conditioner

HOW IT WORKS ?

When you get into larger air-conditioning applications, its time to start looking at split-system units. A split-system air conditioner splits the hot side from the cold side of the system, as in the diagram.

The cold side, consisting of the expansion valve and the cold coil, is generally placed into a furnace or some other air handler. The air handler blows air through the coil and routes the air throughout the building using a series of ducts. The hot side, known as the condensing unit, lives outside the building.

The unit consists of a long, spiral coil shaped like a cylinder. Inside the coil is a fan, to blow air through the coil, along with a weather-resistant compressor and some control logic.

Page 4: Solar Air Conditioner

Compressor work

The working fluid arrives at the compressor as a cool, low-pressure gas.

The compressor squeezes the fluid. This packs the molecule of the fluid closer together. The closer the molecules are together, the higher its energy and its temperature.

The working fluid leaves the compressor as a hot, high pressure gas and flows into the condenser.

Page 5: Solar Air Conditioner

SOLAR AIR CONDITIONING SYSTEMS Solar air conditioning refers to any air

conditioning (cooling) system that uses solar power.

Solar air conditioning units come in two basic types: hybrids and chillers

Page 6: Solar Air Conditioner

A hybrid system A hybrid system combines

photovoltaic technology (PV) with direct current (DC).

It automatically switches between solar and battery power as needed.

When it's set to hybrid mode, these systems charge their batteries when the sun is shining; when it isn't, the system runs on battery backup while charging its batteries via alternating current (AC) power.

Page 7: Solar Air Conditioner

Solar-powered absorption chillers

Solar-powered absorption chillers, also known as evaporative coolers, work by heating and cooling water through evaporation and condensation.

Chillers cool the air by blowing it over water-saturated material -- solar energy is used to power the fan and motor.

SolCool's hybrid solar air conditioner, for example, runs on solar energy, can be plugged in or can run off of batteries.

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Compressor work

The working fluid arrives at the compressor as a cool, low-pressure gas.

The compressor squeezes the fluid. This packs the molecule of the fluid closer together. The closer the molecules are together, the higher its energy and its temperature.

The working fluid leaves the compressor as a hot, high pressure gas and flows into the condenser.

Page 11: Solar Air Conditioner

Environmental Benefits of Solar Air Conditioners Conventional air conditioners running at the

hottest points of the day contribute to power grid demands that often lead to outages.

Solar air conditioning units offer environmental benefits including lower grid demand load shifting during peak usage, reduced electricity costs, fewer power outages, off-the-grid capabilities and reduced greenhouse gas emissions.

Page 12: Solar Air Conditioner

Concerns about Solar Air Conditioners

For those looking to replace their conventional air conditioning with a greener option, solar-powered absorption chillers do offer reduced energy consumption but will increase a home's water consumption.

By design, chillers need to be hooked up to a water line or water storage tank, making them a little less green than the hybrid solar-powered air conditioners that run on solar energy and battery power.

And no matter which style you prefer, a solar-powered air conditioner unit is going to cost you.

It's not as much as installing solar panels on your roof, but compared to medium-sized conventional window air conditioning units that typically sell in the hundreds of dollars--

a solar-powered system will cost you a few thousand plus installation fees. Chillers will also need to be hooked up to a water line. However, the cost savings to the planet and to your wallet in the long run could be encouragement enough.

Page 13: Solar Air Conditioner

COMPARISON

Page 14: Solar Air Conditioner

EXAMPLES