1. The Energy Conservation Center Japan, Survey research on the energy system of the factories; 2001, p.34-39 (in Japanese).
2. Obara, H., Research and development project for innovative thermal management materials and technologies, The 21st national symposium on power and energy systems, No.D231; 2016 (in Japanese).
3. Center for Research and Development Strategy Japan Science and Technology Agency, Research report technology survey on advanced utilization of medium to low temperature heat; 2013, p.16-18 (in Japanese).
4. Lemmon, E.W., Huber, M.L. and Mclinden, M.O., NIST standard reference database 23 REFPROP version 9.0; 2010.
5. The Intergovernmental Panel on Climate Change (IPCC), Fifth assessment report; 2013.