heat recovery flooded water source heat pump units for Pharmaceutical Workshop Project 2021-12-01

Project Overview


This project is a new workshop process cooling and purification air conditioning refrigeration station project for a pharmaceutical factory in Gansu, located in Wuwei Industrial Park, Liangzhou District,Wuwei City, Gansu Province. This project is a large infusion workshop, injection molding machine, mold and blow molding machine cooling, and large infusion workshop , Purification air conditioning in the tablet and granule workshop and process cooling such as workshop sterilization and pure water preparation. According to the process production requirements, this design includes the design content of workshop purification air conditioning, comfort air conditioning (cold and heating), and production line process cooling.


New workshop refrigeration station project of a pharmaceutical factory in Gansu

modular heat pumps design


Project requirements

Items

Air-conditioned area

Air-conditioned area

Summer cooling

temperature requirements

Heating temperature

requirements in winter

Cleanliness

Cold load

Heat load

1

Tablet and granule workshop

400

24±2

18±2

Level D

170kw

100kw

2

Large infusion workshop

700

24±2

18±2

Level C

280kw

175kw

3

Canning room

50

24±2

18±2

Level

Hundred

50kw

12.5kw

4

Pre-treatment workshop

550

24±2

18±2

-

146kw

82.5kw

5

Sterilization workshop and changing room

1000

24±2

18±2

-

224kw

150kw

6

Reserved office area

500

24±2

18±2

-

125kw

75kw

total

995kw

595kw

















Design
1.Air conditioning cooling and heating design instructions:
1.1. This project design uses two heat recovery flooded water source heat pump units, summer cooling capacity 655kw/unit, input power 103kw/unit, heat recovery capacity 400kw/unit, COP6.36; winter heating capacity 700kw/unit, input power 139kw/unit.

1.2. Operation description of flooded water source heat pump unit:
1.2.1. Summer: the condenser of the flooded water source heat pump unit is connected to the cooling pool, and the condensing heat of the unit is discharged through the cooling pool. At the same time, the free hot water generated by the heat recovery of the heat pump unit is supplied to the reheating section of the purification air cabinet of the workshop to reduce steam. Usage: the cold energy produced by the unit is supplied to the comfort air conditioner, purifying air conditioner and injection molding equipment in the workshop;

1.2.2. Winter: The evaporator of the flooded water source heat pump unit is connected to the cooling pool, and the unit absorbs heat from the cooling pool for heating, and the heat produced by the unit is supplied to the workshop's comfort air conditioning and purification air conditioning heating. Through design calculations, the heat contained in the cooling pool is 7000kw (the temperature of the pool drops from 35°C to 5°C), which can satisfy the continuous heating of the workshop for more than 14 hours;

3. Design instructions for workshop cooling water:
3.1. The project design uses three circular counterflow cooling towers with a circulating flow rate of 370m³/h/unit, motor power 11kw/unit, and a 200m³ cooling pool, which is divided into cold and hot zones. The cooling tower cools the pool in circulation.
3.2. The cooling of the sterilizer, distillation section and rare distribution tank in the workshop adopts a single water pump for one-by-one water supply, and the water pump adopts constant pressure frequency conversion control.

3.3. Cooling tower operation instructionsThe cooling tower starts and stops according to the pool temperature, and the pool temperature is higher than 35 degrees Celsius. When the ambient temperature is lower than 10 degrees Celsius, one of the cooling towers cools the small pool alone, and the water in the small pool cools the injection molding machine.

Project system diagram


modular heat pumps Project system diagram


Project configuration table

Product name

The main parameters

Quantity

Remark

Heat recovery flooded water source heat pump unit

Cooling capacity:655KW

Power103kw

Heating capacity700kw,

Power139kw

Heat recovery400kw

2set

H.Stars

Including reserved 500 air

conditioning cooling and heating load

Circular counterflow cooling tower

Cooling water volume370m³/h

Fan power11kw

3set

H.Stars

Air conditioning circulating pump

flow140m³/h

Head33m

Power30kw

3set

Two use and one standby

Combined air purifying machine for tablet and granule workshop

Air volume36000m³/h

Cooling capacity170kw

Heating capacity100kw

Humidification amount60kg/h

With junior high efficiency filter

residual pressure900pa

Fan power22kw

1set

The fan is controlled by frequency

conversion,the fresh air and return

air are installed with electric valves,

and the enthalpy difference is controlled.

Combined clean air processor for

large infusion workshop

Air volume55000m³/h

Cooling capacity140kw

Heating capacity132kw

Humidification amount75kg/h

With junior high efficiency filter

residual pressure900pa

Fan power30kw

2set

The fan is controlled by frequency conversion,

the fresh air and return air are installed with electric valves,

and the enthalpy difference is controlled.

Combined clean air processor for filling room

Air volume5000m³/h

Cooling capacity50kw

Heating capacity15kw

Humidification amount10kg/h

With junior high efficiency filter

residual pressure250pa

Fan power2.2kw

1set

FFU full house laying

Ceiling air handler for sterilization outsourcing room

Air volume12000m³/h

Cooling capacity101kw

Heating capacity158kw

Residual pressure250pa

Fan power4kw

2sets

Ceiling installation

Combined clean air processor for

pre-treatment workshop

Air volume8000m³/h

Cooling capacity86kw With junior high efficiency filter

residual pressure350pa

Fan power5.5kw

2sets

Floor installation


Solution advantage
1.The heat recovery flooded water source heat pump unit is used for cooling in summer and heating in winter. At the same time, the heat recovery produces free reheating heat from the purified air conditioner. The unit has high energy efficiency ratio and comprehensive utilization rate, and low operating energy consumption, which is less than traditional cooling and heating equipment. Energy consumption is more than 50%, while reducing initial investment costs.


2. The heat supply source heat pump unit that recovers the process cooling water in the workshop can do two things with one stone. First, the heat pump unit has high heating efficiency in winter and low operating energy consumption (compared to boiler heating and air source heat pump heating, which can save 70%); second, heat pump The unit taking heat from the pool reduces the temperature of the cooling water in the pool, reduces the operating time of the cooling tower, and reduces operating costs.


3. The cooling water of the injection molding machine is provided by the heat pump unit in summer. When the ambient temperature is lower than 10℃, the cooling water of the injection molding machine is provided by the cooling tower, which reduces the running time of the heat pump host and reduces the operating cost. It is estimated that 320,000 kilowatts of electricity can be saved every year. Time.


4. All pump sets have a one-to-one correspondence with the refrigeration host, cooling tower, and terminal equipment to ensure that the entire system runs in the best mode and reduces operating costs.

5. The purification air cabinet increases the enthalpy difference control. By adjusting the valve ratio of the fresh air and the return air, the fresh air volume and the return air volume are controlled to reduce the cooling and heating requirements, reduce the running time of the heat pump host, and reduce the operating cost.


6. Add fan coils for cooling and heating in the computer room to ensure the normal operation of the equipment in the computer room throughout the year, reduce the use of glycol antifreeze, and reduce initial investment.


7. The main water pumps and cooling towers are equipped with frequency conversion devices, which operate according to temperature changes, reducing energy consumption and water costs.


8. This project has a central computer room with integrated design and centralized management to minimize investment costs and operating management costs.

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