Heat recovery unit modular ground source heat pump cooling heating
|Basic modules|| ||EKWD021CRDR/DV||EKWD032CRDR/DV||EKWD043CRDR/DV|
|Underground circulation mode||Nominal Cooling Capacity||kW||76||113||153|
|Nominal Heating Capacity||kW||79||115||159|
|Total Power of Nominal Cooling Capacity||kW||13||20.4||27.2|
|Total Power of Nominal Heating Capacity||kW||16.8||26.0||34.3|
|Water flow||Application side||m³/h||13.1||19.4||26.3|
|Heat source side||m³/h||15.3||22.9||31.0|
|Nominal Cooling Capacity||kW||67.7||102||137|
|Nominal Heat Recovery Capacity||kW||85||128||172|
|Total Nominal Power||kW||17.3||26||35.0|
|Nominal water flow at the heat recovery side||m³/h||14.6||22.0||29.6|
|Nominal water flow at the evaporation side||m³/h||13.1||19.4||26.3|
|Water heater mode||Nominal Heating Capacity||kW||72||109||146|
|Total Nominal Power||kW||20||30.6||41.0|
|Nominal water flow at the hot water side||m³/h||14.6||22.0||29.6|
|Water flow at the heat source side|
|Application side (air conditioner side)||kPa||19||35||32|
|Heat source side||kPa||26||20||19|
|Application side (evaporator)|| ||Plate||Shell-and-tube|
|Heat source side (condenser)|| ||Shell-and-tube|
total pipe diameter
|Volume Adjustment||Steps|| ||2||3||4|
|Regulation mode|| ||Fuzzy control|
|Compressor||Model|| ||Fully hermetic volute|
|Lubricant|| ||Mineral oil (SUNISO 3GS)|
|Refrigerant||Flow control method|| ||Electronic expansion valve|
|Dimensions||L x H x W||mm||1647x1202x632||2247x1488x710|
|Unit weight||Net weight||kg||452(517)||703(818)||887(1040)|
Notes: Test conditions for the unit are as follows:
■ Test conditions for nominal cooling capacity: inlet chilled water
temperature at the application side 12°C; outlet chilled water
the application side 7°C; inlet cooling water temperature at the
heat source side 25°C; outlet chilled water temperature at the heat
■ Test conditions for nominal heating capacity: inlet/outlet water
temperature at the application side 40/-°C, and rated water flow at
application side for nominal cooling; inlet/outlet water
temperature at the heat source side 7/-°C, and rated water flow at
the heat source
side for nominal cooling.
■ Test conditions for the heat recovery mode: inlet/outlet water
temperature at the heat recovery side 40/45°C; inlet/outlet chilled
temperature at the application side 12/-°C, and rated water flow at
the application side for nominal cooling.
■ Test conditions for the water heater mode: inlet/outlet water
temperature at the hot water side (application side) 50/-°C, and
flow at the heat recovery side for heat recovery conditions;
inlet/outlet water temperature at the heat source side (evaporation
rated water flow at the heat source side for nominal cooling.
■ Switching between the cooling, heating, water heater, and heat
recovery modes is implemented through an external valve connected
the water system. The unit provides a interface for controlling the
■ The water main of the assembled unit needs to be made and mounted
on site, and the diameter needs to comply with the design
■ The attached Y-shaped filter must be mounted at the water inlet
of the evaporator of each unit.
■ The net weight in brackets indicates the weight of a
dual-condenser heat recovery unit.
■ The cooling water and chilled water of the unit must be softened
to avoid scaling in the heat exchanger.
■ The water pressure drop of the unit does not include resistance
of any external water pipe or component.
■ Basic modules of the assembled unit are EKWD032CRQRM/S,
EKWD043CRQRM/S, EKWD032CRQVM/S, and EKWD043CRQVM/S. A
unit may be formed by modules of the same model or different
■ Product specifications are subject to change due to upgrade
without further notice.
The modular water source/geothermal unit supports applications in
all conditions and can switch between multiple modes to fully meet
user needs for cooling, heating, and hot water. With an innovative
water system, the energy-saving unit delivers an EER as high as
5.7, provides higher energy efficiency when working at a partial
workload, and saves energy by 50% compared with other systems after
operation in a year.
The unit is designed with a comprehensive water system and consists
of efficient components carefully selected and designed for a low
operation noise. The unit supports fuzzy volume regulation for a
narrow range of temperature changes and quickly reaches the set
In addition, the unit provides hot water at a set temperature as
high as 55°C quickly and steadily to meet requirements for
comfortable hot water in all places.
With modular design, the unit starts step by step, reducing the
shock on the grid, and maintenance of a single unit does not affect
running of other units. In addition, the unit provides multiple
built-in security protection functions, and supports intelligent
and centralized control, facilitating daily management.
More Energy Saving
The leading-edge shell design allows the unit to be installed in an
outdoor space such as terrace and rooftop without the need of a
dedicated room. The unit delivers a long lifecycle and runs for
long. Units may be installed in batches according to project
progress. One water system that works in multiple modes saves
investment on other devices such as heating and hot water supply
devices, thereby saving the energy.
Convenient Model Selection
The 32RT and 43RT basic modules support free combination of master
units and slave units to
from 1 to 16 units, providing as many as 153 solutions for a
cooling capacity as high as 688RT.
The unit sends control signals to valves of the water system to
easily switch between the water
source/geothermal heat pump mode, heat recovery mode, and water
heater mode, meeting requirements for cooling, heating, and hot
water around the clock.
Variable Water Flow Design
The unit easily implements variable primary flow pumping, which
helps the central air conditioning system save energy by 30%.
The modular design allows transportation by using elevators and
manual forklifts and eliminates the need for hoisting.
The modular design allows units to be moved separately and
assembled, facilitating installation work.