Overview:

Project name: Henan Shuanghui Food Processing and Energy-saving

Project location: Henan Luohe

Investor: Henan Shuanghui Investment Development Co., Ltd.

Equipment selection: 1450kw steam LiBr absorption chiller

                                   1450kw hot water LiBr absorption chiller

Main feature: Recycling the high-temp steam condensing water produced during the food sterillization to supply cooling for production process and  factory room.

Introduction:

Shuanghui group is a large food group mainly handling the meat process, whose head quarteris located in Luohe, Henan province ( a well-known food city). At present,Shuanghui group is the largest processing base for meat in China with whole capital 7 billion and 45000 staff. In 2008, it got 35 billion Yuan sales revenue. Shuanghui group  adhere to developing modern meat industry with new method, bringing in advanced technical equipment to form a industry group,which focuses on slaughter and meat processing, with feeding industry, slaughter, meat processing, chemical packing, logistics, foreign trade and soon to support.

This project adopts to high temperature sterilization water as driving heat resource for hot water absorption chiller. The temperature and flow of the hight emperature sterilization water are instable; the range of flow rate 20-100m³/h, the range of temperature is 105-115^oC, the range of temperature of circulating hot water tank is 95-99^oC, and the flow rate is 140m³/h. To ensure the stable cooling capacity of hot water chiller, the driving heat  resource should be taken from the circulating hot water tank, adopting indirect heat exchange mode.

1# heat exchanger technology parameter:

The first time inlet/outlet temp: 97/87^oC

The first time flow rate: 100m³/h

The second time inlet/outlet: 78/87^oC

The second time flow rate: 111m³/h

87^oC hot water from the1# panel heat exhanger back to the hot water tank.

Inorder to improve the inlet temperature of the hot water absorption chiller, the second time 1 #heat exchanger outlet temperature 87^oC should beincreased to 92.4^oC, 2# heat exchanger technology parameter:

The first time inlet/outlet temp: 110/95^oC

The first time flow rate: 40m³/h

The second time inlet/outlet: 87/92.4^oC

The second time flow rate: 111m³/h

95^oC outlet water from 2# panel heat exhanger back to the hot water tank.

92.4^oC outlet water from 2# panel heat exhanger will drive the hot water chiller.

Highlights:

Chiller used for Recovery of Waste Heat

Using High temp condensing water produced in food sterilization process as the driving power, the hot water LiBr absorption chillers were used to supply cooling to processing and factory. Although the heat resource inlet/outlet temperature is 90/75^oC, two stage hot water chillers are used to ensure the unit COP is high to 0.85, with obvious energy saving effect.