We have an old air conditioner with an EER of 6. EER is basically Energy Efficiency Ratio which is given by number of Btus the air conditioner is pulling out per hour divided by watts of power consumed.
| Air conditioner 1 | Air conditioner 2 |
|---|
| Time | 2,400 hours | 2,400 hours |
Why are most home air conditioners so ineffective and inefficient? Depends on the conditioned space and installation. A/C equipment that is undersized is definitely going to be ineffective at maintaining temperature, as one that is oversized going to be ineffective at maintaining a comfortable humidity level.
Using the government's Standard Assesssment Procedure (SAP) your home will be given a numerical score from 1-100 SAP points. These scores are divided into bands as follows: EPC rating A = 92-100 SAP points (most efficient) EPC rating B = 81-91 SAP points.
You can improve water efficiency in your water cooling towers and subsequently preserve energy and save you money.
- Piping Change. Simple repairs like a change to the water piping can help you mange your energy consumption.
- Focus on Recycling.
- Periodically Inspect all Equipment.
- Increase Cooling Cycles.
BUT AS A RULE OF THUMB , MOST ACs ARE ABOUT 1.1KW/TON IN INDIA. SO A 5 TON AC WOULD BE AROUND . 1.1 KW/TON X 5 TON = 5.5 KW ( 1 kw consumed electricity in per hour = 1 unit . IN ONE HOUR 5 TON AC ASSUMED POWER CONSUMED 6 UNIT /HOUR.
The formula to the right can be used to calculate COP. In other words, COP is defined as the relationship between the power (kW) that is drawn out of the heat pump as cooling or heat, and the power (kW) that is supplied to the compressor. is achieved for each kW of power consumed by the pump's compressor.
COP – the ratio that measures the energy efficiency of the HEATING performance. EER – the ratio that measure the energy efficiency of the COOLING performance. Both ratios are determined by the amount of heating and cooling generated by the air conditioning compared with the 1kW of electricity it consumes.
The SEER rating of a unit is the cooling output during a typical cooling-season divided by the total electric energy input during the same period. In the U.S., the SEER is the ratio of cooling in British thermal unit (BTU) to the energy consumed in watt-hours.
Combustion efficiency is checked by measuring the oxygen or carbon dioxide content and temperature of the flue gas. Measuring content will show whether the unit is receiving the correct amount of oxygen.
Comfort zone is a region of temperature and relatively humidity. It is useful because it can used to test how we response to different types of indoor air conditioners and then it can give us an idea of which condition is considered comfortable. 2) High energy and electrons.
Combustion efficiency is checked by measuring the oxygen or carbon dioxide content and temperature of the flue gas. Measuring content will show whether the unit is receiving the correct amount of oxygen.
A ton of refrigeration (TR), also called a refrigeration ton (RT), is a unit of power used in some countries (especially in North America) to describe the heat-extraction capacity of refrigeration and air conditioning equipment.
Maximum chiller efficiency is producing the greatest tonnage at the lowest kilowatt usage. Maximum efficiency occurs with most chillers running at approximately 70-75 percent load and the lowest entering condenser water temperature (ECWT), based on design.
COP stands for Coefficient Of Performance and indicates the efficiency of heating and cooling machines. The COP is defined by the ratio heat dissipation and electrical power intake. It's like the efficiency of the machine, but higher than 100%.
Main performance parameter is ikW/TR and it is define by ratio of power input to compressor divided by tons of cooling produced.
An economizer is a type of sub-cooler that uses part of the total refrigerant flow from the condenser to cool the rest of the refrigerant flow (see Figure 10.13). The cold gas from the economizer can also be used to provide extra cooling for the compressor.
coefficient of performance (COP) Ratio of work or useful output to the amount of work or energy input, used generally as a measure of the energy-efficiency of air conditioners, space heaters and other cooling and heating devices. Higher the COP, higher the efficiency of the equipment.
Main performance parameter is ikW/TR and it is define by ratio of power input to compressor divided by tons of cooling produced. Lower ikW/TR indicates higher efficiency. COP (Co - efficient of Performance) is define by ratio of EER by 3.413. Study presents performance of two water chiller in tropical climate.
In the simplest sense, EER is the rating of efficiency given to an HVAC system. It is calculated by comparing the actual cooling capacity to the energy input, usually electricity. The number is derived by dividing Btu's by watt-hours. An EER rating of 12 = one ton (12000 btu's) / kWh.
