TY - JOUR
TI - High temperature cascade heat pump system with double medium and low temperature heat sources
AU - Cui Siqi
AU - Geng Shuwei
AU - Bai Jing
AU - Zhang Yi
AU - Guan Size
AU - Yang Hanfei
JN - Thermal Science
PY - 2023
VL - 27
IS - 3
SP - 1835
EP - 1843
PT - Article
AB - In response to the call for carbon neutrality and control of CO2 emission,  this paper proposes a high temperature cascade heat pump system with double  medium and low temperature heat sources. Compared with those with a single  heat source, the new system has obvious advantages in energy saving and  carbon emission. An experiment is designed where the temperature of medium  temperature heat source keeps unchanged, revealing that, compared with a  single low temperature heat source, the heating capacity of low temperature  heat source reduces by 2.9%, the heating capacity of medium temperature  heat source increases by 31.1%, the total power consumption of the heat  pump increases by 3%, and the heating capacity of the heat pump increases by  4.3%.