Ice Storage Compression condensing unit

Compression Condensing Unit For Thermal Storage Air Conditioning System (ice storage air conditioning system)

Design scheme of ice storage air conditioning system in a workshop

User needs:

A transformer production workshop, there is basically no heat source, the inner temperature is 36℃, want to install an ice storage air-conditioning system. Use the low electricity price from 11 pm to 7 am in the next morning to store ice, to meet the air conditioning demand of 14 hours working time.

Steel structure workshop, iron structure roof with insulation layer.

Workshop size: 200M * 153M * 13M (L*W*H). There are 22 sets of existing industrial fans.

Design Scheme:

The summer atmospheric pressure in this area is 101.15KPa,

Maximum dry environmental parameters: bulb temperature is 35℃, relative humidity is 63%, absolute moisture content is 22.8g/kg.

In order to improve the stability of the system, design with severe working conditions: the dry bulb temperature is 40℃, the relative wet bulb is 75%, and the absolute moisture content is 36.4g/kg

Refrigeration Load Calculation:

It needs to meet the cooling capacity of normal air conditioning in the workshop during the 14 hours working time:

1) The calculated cooling capacity is:  30000m2*180w/1000=5400KW/h

2) The total cooling capacity is: 5400*14h=75600kw

3) Ice storage tank volume: 25930m3 (52000*10000*5000)

4) The cooling capacity of single chiller machine is: 75600/8=9450KW

Ice storage tank volume	Proportion	Temperature Difference	Specific Heat	Time (s)	Refrigerating Time (h)	Refrigerating Capacity
25930	1000	20	4.2	3600	8	75629.17

Equipment selection
1) Chiller Host: 8 compress condensing screw refrigeration units (ice maker), evaporating temperature: -15℃, cooling capacity: 1200KW, titanium evaporator, 25%~100% stepless energy adjustment
2) Secondary Refrigerant: 30% salt water
3) Ice storage tank: 316 stainless steel double-layer insulation layer in the middle
4) Water-water exchange: select stainless steel 316 plate heat exchanger, 5400kw/h

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