23 September 2011

INDUSTRIAL HEAT PUMP – CONTRIBUTION TO GLOBAL WARMING PREVENTION AND ITS ISSUES


Industrial heat pump can contribute greatly to the prevention of global warming by saving energy. In the industrialized countries, some efforts have been made to save energy
by introducing industrial heat pumps during the past 30 years.

However, its application still remains in the limited area. The objective of this presentation is to show the barriers against implementation of Heat Pumps and details of possible solution
achieved in actual reference, and finally a more effective approach. Especially, the reference of CDM projects shows important possibilities in the future.

In Chapter 1, the barriers against the implementation of heat pumps and some measures taken to overcome such barriers are analyzed in several cases. The development of heat
pumps in breweries and alcohol plants in Japan during the last 30 year is shown as a typical example.

In Chapter 2, a simple process analysis tool is introduced which was developed to overcome the issues found in successful cases shown in Chapter 1 such as massive time and labour
required to develop a system as well as its implementation.

In Chapter 3, implementation of CDM projects in brewery plants in Vietnam and Laos using heat pump technologies developed in Japan is introduced. In these projects, approx. 5,000t-
CO2/year each CER (Certified Emission Reduction) were achieved with the use of high efficiency (COP) heat pump system. One is MVR (Mechanical Vapour Recompression) system for Wort Kettle using screw compressor with COP of 15 and another is a heat pump system for tunnel pasteurizer using high pressure NH3 piston compressor with COP of 9.

CDM:Clean Development Mechanism; A mechanism designated in Kyoto Protocol which enables transfer of Greenhouse Gas emission rights derived from the emission reductions
achieved in developing countries to industrialized countries.