Open Access

ARTICLE

Field Investigation and Comparison Analysis of Low-Grade Heat Pump Technologies in Building Space Heating Projects

Yanxue Li^1,*, Weijun Gao^1,2, Xiaoyi Zhang², Wenya Xu¹, Yingjun Ruan³, Yinzhong Wang⁴

1 Innovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, China
2 Faculty of Environmental Engineering, The University of Kitakyushu, Kitakyushu, 808-0135, Japan
3 Institute of Mechanical Engineering, Tongji University, Shanghai, 200092, China
4 Dongying Electric Power Company, Dongying, 257000, China

* Corresponding Author: Yanxue Li. Email: