solution

solution Classification

Condensing Heat Recovery System Solution

The technology of Moon-Tech’s condenser waste heat recovery system offers multiple heating methods, including sensible heat recovery, high-temperature heat pumps, off-peak electricity thermal storage, steam heat pumps, and steam boosters. Each solution provides different heating functions and is applied in scenarios that require high energy efficiency and simultaneous heating and cooling, such as livestock slaughtering, seafood processing (aquaculture), dairy production, frozen foods, beer brewing, food and pharmaceutical drying, large hotels, sports venues, swimming pool hot bath services, and residential heating, among others.

Design standards

The full heat recovery heat pump unit utilizes the condenser waste heat from the refrigeration system to produce high-temperature hot water, which is used for winter heating in northern regions, boiler make-up water, and the initial water supply for certain heating processes.

The full heat recovery heat pump is used to generate ultra-high-temperature hot water (> 90°C), which can replace boiler steam in certain processes, such as the scalding tanks in the slaughtering industry.

The full heat recovery heat pump is used to generate low-pressure steam, partially replacing steam boilers in certain processes, such as bottle washing in the beer industry and pasteurization in the dairy industry.

The full heat recovery heat pump is used to generate steam to replace boilers, based on the principle of energy cascading utilization, providing regional substitution for boiler steam.

Thermal energy system core technology

The Moon-Tech thermal energy system is a multifunctional heating system based on low-temperature heat sources (such as refrigeration system condenser heat, environmental heat sources, or waste heat sources). The core concept is “waste heat recovery and reutilization.” The system adopts multiple heating methods:

Sensible heat recovery: Recovers sensible heat from refrigeration exhaust, flue gas cooling, etc.

High-temperature heat pump: Converts low-grade thermal energy into high-grade thermal energy.

Off-peak electricity thermal storage: Stores thermal energy by utilizing the price difference between peak and off-peak electricity rates.

Steam heat pump: Includes absorption heat pump technology.

System technical features

Environmental protection

The system operates using clean energy, with zero emissions and no pollution, making a positive contribution to environmental improvement.

energy-saving

The recovery and reutilization of condenser waste heat not only replaces or reduces fossil energy consumption but also contributes to the optimization and improvement of the refrigeration system, reducing the operational energy consumption of equipment such as evaporative coolers.

cost-effective

Compared to traditional natural gas, fuel oil, and electric boilers, the condenser heat recovery system offers advantages such as a higher COP (Coefficient of Performance), lower initial investment, and lower operating costs.

convenient

The unit is modular and skid-mounted, requiring minimal space and offering simple connection to the refrigeration system. It features automatic control, making it easy to operate. The system is flexible, precise, safe, and reliable in its operation.

Project Cases

A dairy processing company in Shenyang, mainly producing ice cream.

The ammonia refrigeration machine room in the plant has 18 sets of refrigeration compressor units, with a large amount of condenser heat available for recovery.

The heating demand is to meet the plant’s production process hot water needs, mainly for CIP cleaning of tank bodies in the workshop.

The process hot water temperature is no lower than 60°C, with a maximum hot water usage of 300 tons/day, using groundwater as the water source.

A thermal storage tank is configured to store the hot water produced by the heat recovery system, and it can fully utilize the off-peak electricity periods to generate hot water.

Solution

In response to user needs, the following equipment is provided:

One LS16SHRB ammonia heat pump unit. One preheating plate heat exchanger. One isolating plate heat exchanger. Two circulating water pumps. Two thermal storage tanks (45+60 cubic meters, limited by the machine room space). All equipment is made of stainless steel.

The heat pump unit generates hot water at 70°C, which is then used to heat process water through the isolating heat exchanger, with the final outlet water temperature not lower than 65°C.
The unit’s electrical power is 185KW.

Project Requirements

Owner’s requirements:65°C hot water: 570 tons/day.95°C hot water: 120 tons/day.
65°C hot water is mainly used for hair removal and spraying in the slaughter line, while 95°C hot water is used for reheating the scalding pot and high-temperature cooking.
The existing refrigeration system is an R717 system, equipped with 6 ZNX2000 evaporative coolers, which have a large amount of heat discharge and sufficient recoverable condenser waste heat.
The owner’s previous heating method was to purchase industrial steam, with a purchase price of approximately 320 RMB/ton.
The owner’s plant implements a peak and off-peak electricity pricing system, with off-peak electricity being fully utilized during the night.

Solution

The Moon-Tech full heat recovery system is used to recover the condenser waste heat from the refrigeration system. The recovered heat will heat the plant’s underground water (approximately 15°C) to 65°C, which is then stored in an insulated thermal storage tank and can be directly supplied to the user’s heating processes at the end point.
The Moon-Tech steam heat pump unit uses the 65°C hot water generated by the full heat recovery as the heat source, further increasing the heat quality to produce 95°C high-temperature hot water, which is stored in an insulated thermal storage tank and can be directly supplied to the user’s heating processes at the end point. After releasing heat, the 65°C source water is recycled back into the full heat recovery system for reheating to become 65°C hot water, which is then stored in the tank.
The project fully replaced the plant’s previous method of using purchased steam for heating, thereby achieving energy savings and carbon reduction.
To date, it has been in continuous operation for four years, recovering a total of 96,768 GJ of condensate waste heat, reducing 22,000 tons of water consumption and cutting 12,500 tons of CO₂ emissions.
The project has also generated approximately 10 million RMB in economic benefits.