Modular heat pump,
EVI MCU-YHE series

The low-temperature version os a modular heat pump from Mycond. This series of heat pumps uses compressors from the world famous manufacturer Copeland "Emerson" with intermediate refrigerant injection using EVI (Enchanced Vapor Injection) technology. Using this technology with a high-level control system allows the heat pump to reabily and effortlessly maintain a high temperature of coolant even in the coldest days of the season. Possibility of continuous operation at ambient temperatures down to -26°C. Using the heat pumps of EVI-series provides year-round and uninterrupted heat/cold supply for any of your facilities

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Heating capacity

78-160 kW

Cooling capacity

70-150 kW

High stability

Employs an efficient Evi technology for improved stability of cooling and heating operation.

Operation limits

Thanks to many years of experience in the development and design of refrigeration equipment, the company has successfully implemented the technology advanced steam injection (EVI) that allows to work in a heat mode even in the most severe winter, to -26 degrees.

Optimized heating

Enhanced vapour injection (EVI) increases the refrigerant flow rate and pressure, which means higher heat output and water temperature on the user’s side. At the same time, the increased refrigerant circulation rate results in 20% higher heat output at low temperatures. Heating operation is possible at ambient temperatures down to -26 °C.

Cooling innovations

During cooling operation at an ambient temperature of 45...55°C, cold refrigerant in the vapor state is injected into the compressor, thereby reducing the discharge temperature and facilitating the compressor's working conditions. With EVI technology the main liquid refrigerant flow in the economizer circuit is additionally subcooled, which increases the cooling efficiency of the entire chiller up to 20%.

Operable at -25 °C

The heat pump equipped with an EVI compressor ensures efficient heating at outdoor air temperatures down to -25 °C. This also greatly improves the heat pump performance, as the pump produces more heat with less power consumption.

Special design

Compared to conventional modular units, the effective area has increased by 30 % for the air heat exchanger and 15 % for the water heat exchanger, resulting in 10 % more rated cooling capacity and 16 % more rated heating capacity. At outdoor temperature above 0 °C, the outlet water temperature in the heating mode is as high as 55 °C.

Modular Design

The unique feature of the series is its modular design with the ability to combine up to 16 modules (165YH, plus up to 8 modules) in a single system.

This feature allows extending the capacity over 1 MW with the number of capacity stages being equal to the number of compressors, so that you can have up to 32 capacity stages with 16 chiller modules (in dual-compressor models). The entire system is controlled via a single remote controler connected to the master module, while the rest are slave
modules. This results in a N-module monoblock heat pump.

Specifications	Units	MCU066YHE	MCU140YHE
Cooling capacity	kW	70	150
Heating capacity	kW	78	175
Capacity steps	%	0/50/100	0/50/100
Power supply		380-415 V, 3 phases, 50 Hz	380-415 V, 3 phases, 50 Hz
Electric power in the cooling mode EER	kW W/W	21,87 3,2	43,8 3,42
Electric power in the heating mode COP	kW W/W	22,28 3,42	48 3,65
Refrigerant type		R410A	R410A
Compressor type		Hermetic EVI scroll compressor	Hermetic EVI scroll compressor
Number of compressors		2	2
Water flow rate	m³/h	12	25,8
Water perssure drop	kPa	50	62
Hydraulic connection		DN 65	DN 65
Air heat exchanger type		Copper and aluminium	Copper and aluminium
Fan type		Axial	Low noise axial fan with BLDC motor
Number of fans		2	2
Air flow rate Maximum temperature in heating mode Operating range in heating mode Operating range in cooling mode	m³/h °C °C °C	30000 55 -26~48 +5~20	43000 60 -30~48 -20~48
Dimensions, LxWxH	mm	2200x860x2135	2250x1150x2255
Weight	kg	665	940

Notes:
1. Cooling capacity and electric power consumption during cooling operation refer to the rated water flow rate, outlet water temperature 7 °C and ambient air temperature 35 °C.
2. Heating capacity and electric power consumption during heating operation refer to the rated water flow rate, outlet water temperature 45 °C and ambient air temperature 7 °CDB.