Application Low-Grade Industrial Waste Heat for Power Generation Using Organic Rankine Cycle Power Generator Combined with Gas Engine-Driven Heat Pump

Abstract

This paper presents a power generation using Organic Rankine Cycle (ORC) power generation combined with Gas Engine-Driven Heat Pump (GEHP-ORC system) by utilizing the low-grade industrial waste heat. In addition, the GEHP is used to upgrade the heat with temperature below 70 °C before supplying to a 20 kWe ORC power generator. In this study, the system is mathematically modeled and simulated in order to evaluate the economics and the environmental impact of the system. The results of the evaluation showed that as the system consumed the 60 °C waste heat for power generation, in term of the economic analysis, the levelized electricity cost (LEC), and the payback period were 0.09521 USD/kWh, and 18.72 Year, respectively. In term of the environmental impact, the system could reduce CO2 emission around at 22.83 Ton CO2 eq. From this study, it can be concluded that the GEHP-ORC system is applicable for an industry with low-temperature heat waste. This waste can generate more income back to the industry. However, the payback period is normally long for a renewable energy technology. Thus, a subsidy from the government is in need.

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Author Information
Sorawit Sonsaree, Shinshu University, Japan
Tatsunori Asaoka, Shinshu University, Japan
Somchai Jiajitsawat, Naresuan University, Thailand
Hernan Aguirre, Shinshu University, Japan
Kiyoshi Tanaka, Shinshu University, Japan

• Category: ACSEE2016, ACSS ACSEE AGEN 2016, Oral Presentation, Paper Available
• Tag: Energy: Renewable Energy and Environmental Solutions,

Posted by James Alexander Gordon

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