(英)非电空调与电空调对比

Comparisons Between Electric & Non-electric Air Conditioning Non-electric air conditioning is powered by fuels & waste heats with the refrigerant of Lithium Bromide (LiBr) and water. It is internationally known as absorption chiller. The non-electric air conditioning use fuels to provide cooling and heating instead of electric chillers that losses efficiency after 5 generation conversion, energy efficiency has been highly improved. 1. The total energy efficiency of electric chillers is about 52%, and CO2 emissions are 0.68kg/ kWh ·The energy efficiency for coal-based power plants in China is about 13% (including exploitation, transportation, power generation, transmission and transformation). Before people only calculated the power generation efficiency after coals reached in power plants and ignored the huge waste in exploration and transportation, which has resulted in wrong information of high power generation efficiency) ·Energy efficiency of electric chillers is about 400% (300% for conventional air-cooled chillers and 500% for water-cooled chillers) ·Total efficiency is: 13%×400%=52% ·CO2 emissions per kWh cooling capacity are about 0.68kg (power consumption 0.25kWh and coal consumption 0.235 kg×2.9 kg CO2). 2. Energy efficiency for gas-fired non-electric chillers is 112%, and CO2 emissions are 0.15 kg/kWh ·Total efficiency of gas exploitation and transportation is about 82% ·Efficiency of non-electric chillers is 136% (BROAD) ·Total efficiency is 82%×136%=112% ·CO2 emissions per kWh cooling capacity are 0.15 kg (gas consumption 0.074m3×1.98 kg CO2). 3. Non-electric chillers driven by waste heat (exhaust) from power generation do not consume useful energy, so their energy efficiency is infinitely high. 4. Investment on electric chillers: about Euros 165/kWh cooling capacity (calculation per 3.5MW model) ·Electric chiller cost: Euros 65/ kWh cooling capacity ·Boiler, boiler room and other related facilities: Euros 40/ kWh cooling capacity ·Power distribution facilities and power supply room: Euros 60/kWh cooling capacity. 5. Investment on non-electric chillers: about Euros 112/ kWh cooling capacity (calculation per 3.5MW model) ·Three functions in one unit (cooling, heating and hot water), no need for other equipment. (Please contact us for more detailed data) BROAD AIR CONDITIONING July 16, 2010 Compared with conventional electric air conditioning, the energy efficiency of BROAD non-electric air conditioning is 2 times higher, while their CO2 emissions are 4 times lower and investment is 1/3 less.