Open AccessCombined Heat and Power: CHP Present and Future
Author(s) -
M. Patel
Publication year - 2016
Publication title -
journal of undergraduate research
Language(s) - English
Resource type - Journals
ISSN - 2572-6161
DOI - 10.5210/jur.v9i2.7555
Subject(s) - cogeneration , waste heat , boiler (water heating) , waste management , electricity , waste heat recovery unit , absorption refrigerator , electricity generation , chiller , environmental science , engineering , electric power , power (physics) , mechanical engineering , heat exchanger , electrical engineering , refrigeration , physics , quantum mechanics , thermodynamics
Combined Heat and Power (CHP) is an ecient way to generate electricityand heat by utilizing the waste heat from the electric generator in place ofheat from a separate boiler. Currently, most electricity is purchased from acentral utility company that generates power at 35% eciency; the balance offuel input energy is lost as heat. With CHP some of the electricity isgenerated onsite and the waste heat from the generator (water jacket andexhaust) is used for space and water heating and other industrial processesthat require heat. This reduces the fuel requirements to the boiler whichalso reduces emissions of Green House Gases (GHG) and other pollutants.Overall CHP eciencies can make upwards to 85%. CHP is also known asBuildings Cooling, Heating and Power (BCHP), CHP for buildings (CHPB),Integrated Energy Systems (IES), Total Energy System (TES), Tri-generation(Trigen) and Cogeneration. CHP is best fit where there is demand for heat(or cooling load) and electricity is simultaneous e.g. hospitals, the hotelindustry, educational institutes. Exhaust heat can be applied to supportcooling loads with absorption chillers.