Transcript
AIR COMFORT AIR TREATMENT 9566 GB 2016.03.17
reCooLer HP® EQKR HEAT PUMP » TECHNICAL CATALOGUE
2
ReCooler HP–EQKR
Technical Catalogue
Content ReCOOLER HP – EQKR HEAT PUMP …………………………………… 3 product presentation …………………………………………………. 3 applications ……………………………………………………………………. 4 energy performance …………………………………………………... 5 product overview ………………………………………………………... 5 main features ………………………………………………………………… 5
sorption rotary heat exchanger ……………………… 5
compressor ………………………………………………………………. 5 control system ……………………………………………………..… 6
smart control ……………………………………………………….... 7
Third Party AHU controls ………………………………….... 7
variable air volume function …………………………………… 7 automatic refrigerant volume control ……………….. 7 passive defrost system ……………………………………………… 7 active defrost system ………………………………………………… 7 technical data ……………………………………………………………….. 7 refrigerant quantity per circuit ……………………………. 8 maximum current with passive defrost ………………… 8 maximum current with active defrost …………………… 8 unit arrangements ……………………………………………………….. 9 passive defrost system ………………………………………………. 9 active defrost system …………………………………………………. 9 available options ………………………………………………………….. 9 accessories ……………………………………………………………………. 9 norminal performance data ……………………………………. 10
Fläkt Woods
9566 GB 2016.03.17
Specifications are subject to alteration without notice
Technical Catalogue
3
ReCooler HP–EQKR
reCooLer HP–eqKr HeAt PUmP while the rotary heat exchanger recovers much of the energy required, the remainder is provided by the integrated heatpump. The Reversible Heat-pump unit in the ReCooler HP is designed at external air temperatures as follows: • For cooling from +20 to +40 °C • For heating from +20 to -15 °C with passive defrost system • For heating from +20 to -20 °C with active defrost system A supply air temperature 14 °C in cooling and 25 °C in heating is possible depending on air temperature and the supply air/extract and air flow ratio selected. Exact details are calculated by Acon. Typical summer case:
ProdUCt PreSentAtIon
22°C
The ReCooler HP offers packaged total energy recovery with integrated dx cooling and heating with exceptionally high energy efficiency. The unit comprises the semco sorption rotary heat exchanger offering excellent energy recovery. during the summer the rotor recovers both sensible and latent energy in order to minimize the cost of the additional cooling required to meet specified comfort conditions.
22°C
25°C
23°C
-16°C
9566 gb 2016.03.17
19°C
Typical winter case
during the winter the rotor offer excellent heat recovery but also recovers moisture in the extract air so that the indoor humidity is kept higher than would otherwise be the case. because of the moisture recovery, the semco rotor is much less susceptible to frost and the need for defrosting is very much reduced.
fläkt woods
19°C
15°C
21°C
22°C
Specifications are subject to alteration without notice
4
ReCooler HP–EQKR
Above the minimun speed, the compressor is speed controlled so the heating and cooling can be controlled steplessly providing smooth control of the supply air.
Technical Catalogue
APPLICATIONS The ReCooler HP can be used in most public, commercial and light industrial applications where a rotary heat exchanger would normally be considered. The eQ air handling unit with ReCooler HP provides independent ventilation at the right temperature so the terminal cooling and heating systems can be optimised to reduce both first cost and running costs. In some applications such as factories and sports halls it is possible to use the ReCooler HP to supply all of the heating and cooling without the need for any other system.
The ReCooler HP is supplied as part of a complete eQ air handling unit. As a minimum, fans, filters and dampers will be needed but the unit can be configured with other functionality to suit the needs of the application. The unit can be installed indoors in a plant room or it can be provided with a roof for installation outdoors.
For regions with cold climate the ReCooler HP heatpump has a flexible defrosting system; which can be tailored to suit the application. Patent pending.
Fläkt Woods
9566 GB 2016.03.17
Size
Nom Heating
Nom Cooling
008
4
6
011
15
12
018
21
17
023
26
19
032
35
30
041
52
38
050
61
49
072
87
68
Specifications are subject to alteration without notice
Technical Catalogue
5
ReCooler HP–EQKR
energy PerformAnCe
mAIn feAtUreS
The ReCooler HP offers extremely good energy performance. Our Energy consumption calculation system in Acon can estimate the total annual energy consumption of the total unit and can be compared with other AHU system solutions.
The ReCooler HP is self contained and requires the minimum of work to install it. The ReCooler HP is fully tested in the factory and is supplied charged with refrigerant and ready to run.
Sorption rotary heat exchanger The sorption rotary heat exchanger with variable speed drive can offer temperature efficiency over 85 % in accordance with the En308 standard. The variable speed drive means that the rotor can provide energy recovery throughout the year. together with the heat pump the reCooler HP offers 100 % + energy recovery!
Compressor
ProdUCt oVerVIew Hydrophilic coated coils.
All refrigerant equipment is housed within the casing but not in airstream. R410a refrigerant offers high efficiency and compact design. High efficiency PM motor driven, variable speed scroll compressor.
splitable unit available for easy installation. Twin electronic expansion valves other accurate and efficient control. smart software developed by fläkt woods for optimal operation and energy savings. Modbus communication.
The compressor and control equipment is housed within the casing of the unit but not in the airstream offering a smart appearance while making service and inspection easy to carry out. The variable speed compressor is a high efficient scroll machine with a permanent magnet motor driven by the integrated frequency inverter.
High performance and durable eQ Casing. sEMCO total energy rotary heat exchanger offers maximum heat and cooling recovery.
Reversible heat pump function offers cooling and heating in sequence with the energy recovery.
This high quality compressor offers low noise, high efficiency and near step less control of the supply air temperature.
Continued on next page fläkt woods
9566 gb 2016.03.17
Specifications are subject to alteration without notice
6
ReCooler HP–EQKR
More importantly, perhaps, it also performs exceptionally well at part load so the overall energy consumption over the year is kept to a minimum. See below for details of nominal peak and part load efficiency. The inverter drive also means that we can start the machine at low load avoiding high starting currents. The Power factor is close to 1.0, which means reduced losses in the power supply. The refrigerant used is R410a and naturally, all of the components are designed for use with that refrigerant. R410a consists of HFC-125 and HFC-32. It is low-toxic, non flammable and non corrosive. It has an Ozone depleting potential of zero. The Global Warming Potential (GWP) is 2088.
Technical Catalogue
Control system The ReCooler HP is equipped with a high quality and professionally designed control panel ensuring safety, reliability and ease of service. The control system has been developed in cooperation with global manufacturers specifically to manage the operation of the electronic valves and compressors to ensure the very best operation and efficiency seen on the market.
R410A offers high efficiency and is readily available at low cost. The heat exchangers are conventional DX coils with copper tubes and hydrophilic coated aluminium fins as standard. The drain trays under the heat exchangers are fitted with electric heating cables to prevent ice build up under the coil. ReCooler HP is fully tested in the Fläkt Woods Energy performance laboratory.
Fläkt Woods
9566 GB 2016.03.17
Specifications are subject to alteration without notice
Technical Catalogue
The unit is started and stopped through a 0-10v signal or via Modbus. When supplied with an eQ unit with integrated controls, communication is through modbus and is set up on delivery. All parameters can be read on the display on the controller. Alarms are passed through to the eQ controller.
Smart Control
7
ReCooler HP–EQKR
Variable Air Volume function The design of the ReCooler HP is optimised for VAV operation with the variable speed compressor and compressor operation envelope control. This means that when the airflow reduces the compressor will reduce speed if it reaches the edge of the envelope so that alarms and operation stops due to high pressure are avoided.
Automatic refrigerant volume control
ReCooler HP includes a very flexible control that includes, two electronic expansion valves to fully control cooling mode, heating mode and refrigerant charge.
Due to the complex system no sight glasses are fitted to the unit as we have an electronic refrigerant volume monitoring system.
It also includes, electronic temperature and pressure sensors maximizes reliability and efficiency.
Passive defrost system
Fläkt Woods provides complete system optimization control for ventilation, cooling and heating.
Third Party AHU controls The ReCooler HP is always equipped with its own control system designed to manage the refrigeration system but the ReCooler HP can be delivered in an eQ unit with or without controls. When supplied with the Climatix AHU controls, the ReCooler HP is connected directly to the Climatix and installation is quick and easy. If supplied without the Climatix controller then it is necessary to ensure that the third party control system is provided with the right strategy for control of the ReCooler HP Recommended control strategy for use where third party controls are to be installed on the AHU: The ReCooler HP is started in heating or cooling mode with a constant signal of 2.5V for 1 minute followed by a signal between 1V and 10V for 9 minutes.
All reversible DX systems need to defrost during cold weather but the ReCooler HP has the advantage that the evaporator is in the exhaust air during heating mode. This means warmer air and less defrosting. The defrosting cycle is activated when the system detects frost on the exhaust coil. The refrigerant circuit is reversed to heat the exhaust coil and melt the ice. The system monitors the melting of the ice and if it does not precede quickly enough the rotor speed is reduced to accelerate the melting. The defrosting process is independent of the airflow and is activated only when absolutely required. Other simple systems are activated on a timer. This means that the ReCooler HP gives a more reliable operation.
active defrost system The active defrost system is basically the same as the passive system but the unit is fitted with an electric heater to help the defrosting.
Technical data ReCooler HP is available in the unit sizes given in the table below. Nominal airflow rates, heating capacity, cooling capacity, COP and EER are tabulated there. For accurate and specific data our selection program Acon should be used.
The heat pump will then proceed in normal operation. After a stop the compressor will be held off for a period of 10 minutes before being allowed to restart in order to protect the compressor by limiting the number of starts to 3 per hour. When switching from heating to cooling or vice versa the signal should be reduced to 0V and held at that for at least 15 minutes before initiating the other signal.
Fläkt Woods
9566 GB 2016.03.17
Specifications are subject to alteration without notice
8
ReCooler HP–EQKR
Technical Catalogue
Refrigerant quantity per circuit
Unit Size
Quantity in kg Circuit: 1
2
3
Total
008
5.4
5.4
011
6.9
6.9
018
9.8
9.8
023
13.4
13.4
032
20.5
20.5
041
13.0
13.0
26
050
14.3
19.5
33.8
072
13.5
13.5
17.5
4 4.5
The ReCooler HP is charged with R410a; which is a fluorinated green house gas having a GWP of 2088. The full range of sizes (008 to 072) of ReCooler HP fall into the range between 5 and 50 tonnes of CO2 which means that they must be leak tested once every 12 months. This is the responsibility of the end user/operator.
Maximum current with passive defrost Unit Size
Current, Amp. 3x400 VAC
The starting current is zero with no peak. The above shows current is the maximum at maximum thermodynamic load. It includes compressor, rotor drive, controls and defrost heater in the active defrost version. EQKR is designed and manufactured in accordance with the following: MD LVD EMC PED F-Gas
Machine directive Low Voltage Directive Electromagnetic compatibility Pressured Equipment Directive Commission Regulation 517/2014
The EQKR is CE marked. Airflow ratio: The supply and extract airflow rates should be similar for best results. Acon limits the ratio to 80 %. Minimum airflow rate at turn-down: size
8
11
M3/s
0.24
0.36
18
23
32
0.54 0.69 0.96
41
50
72
1
1.2
1.5
The table gives the minimum allowable airflow rate through the ReCooler HP for compressor operation. Note that this can also restrict the use of mixing together with the ReCooler HP. Minimum design air flow rate:
008
22.1
011
14.3
size
8
11
18
23
32
41
50
72
018
17.1
M /s
0.4
0.5
0.9
1
1.5
2
2.5
3.5
023
20.9
032
21.1
041
33.8
For accurate and specific performance data use our selection program Acon; which offers full details including energy calculation.
050
41.7
Example:
072
61.8
3
Maximum current with active defrost Unit Size
Current, Amp. 3x400 VAC
008
Fläkt Woods
22.1
011
18.7
018
26.2
023
32.4
032
39.9
041
53.7
050
65.4
072
93
9566 GB 2016.03.17
Specifications are subject to alteration without notice
unit arrangements
9
ReCooler HP–EQKR
Technical Catalogue
It is not possible to have more than one additional heating coil in the unit when the unit is supplied with integrated controls. So if the unit is supplied from the factory with integrated controls (STEQ) then it may have either a pre-heater or a reheater but not both.
Available Options
passive defrost system When the pressure drop reaches defrost set point the circuit is reversed for a short period of time 5 minutes so that the condensing heat can defrost the exhaust coil. Defrosting will occur while the outdoor temperature is below -5 °C.
The ReCooler HP is available in left and right hand version. The supply air may be in the bottom or top deck. The unit is available only in a double deck version with horizontal counter flow airstreams. The rotor is available in either the Semco sorption version or the non hygroscopic version. A split version is available for unit sizes 008 to 032. When delivered in split version the refrigerant circuit is fitted with shut off valves and connectors. The refrigerant is pumped down to the compressor side. Installation is thus quite simple but does require a qualified refrigeration engineer. ➤
900 mm
➤
➤ 500 mm ➤
active defrost system For low outdoor temperatures, below -15 °C, an electric defroster is fitted between the rotary heat exchanger and the exhaust coil in order to give a rapid defrost.
RECOOLER HP UNIT WITH ADDITIONAL HEATER IN THE SUPPLY AIR
Two voltage versions are available: 3x400V 50Hz and 3x230V 50Hz A reheater can be used in cold climate to heat the supply air when the ReCooler HP is in defrosting mode.
Accessories EQAZ-08 Water trap Two water traps are needed; one for each coil drain tray.
200
Where the unit is installed outdoors, the complete drain system must be frost protected.
Fläkt Woods
9566 GB 2016.03.17
Specifications are subject to alteration without notice
10
ReCooler HP–EQKR
Technical Catalogue
Nominal Performance data Cooling Performance Outdoor temperature 50 % Humidity
Exhaust temperature 50 % Humidity
25
22
27
23
29
24
35
25
40
26
Supply temperature
18
18
18
20
20
Unit size
8
11
18
23
32
41
50
72
Air flow, m³/s
0,8
1,1
1,8
2,3
3,2
4,1
5
7,2
Total Cooling capacity
kW
11,4
15,6
25,2
32,1
44,2
56,6
69,5
98,8
Compressor cooling
kW
5,6
7,7
12,6
16,1
22,4
28,7
34,9
50,3
EER for compressor circuit
kW/kW
4,9
4,7
4,7
4,8
5,0
4,6
5,0
4,9
Total EER
kW/kW
8,2
8,2
8,7
8,8
9,3
8,8
9,5
9,4
Total Cooling capacity
kW
14,8
20,3
32,7
42,0
57,2
73,2
90,1
127,9 60,0
Compressor cooling
kW
6,7
9,2
15,0
19,2
26,7
34,2
41,7
EER for compressor circuit
kW/kW
4,0
3,8
3,9
3,8
4,0
3,7
4,0
4,0
Total EER
kW/kW
7,7
7,6
7,9
8,0
8,3
7,7
8,5
8,3
Total Cooling capacity
kW
18,5
25,9
40,9
52,4
71,4
91,3
112,5
159,6
Compressor cooling
kW
7,8
10,7
17,6
22,4
31,2
40,0
48,8
70,3
EER for compressor circuit
kW/kW
3,4
3,3
3,3
3,3
3,5
3,2
3,4
3,4
Total EER
kW/kW
7,3
7,3
7,4
7,4
7,7
7,1
7,8
7,6
Total Cooling capacity
kW
32,4
44,3
71,6
91,4
125,0
160,0
196,0
281,0
Compressor cooling
kW
7,8
10,6
17,8
22,1
32,2
41,5
49,4
74,5
EER for compressor circuit
kW/kW
3,1
3,0
3,1
3,0
3,0
2,8
3,1
2,8
Total EER
kW/kW
13,0
12,6
12,6
12,3
11,6
10,9
12,3
10,6
Total Cooling capacity
kW
47,8
65,4
105,0
135,0
179*
235,0
288,0
405**
Compressor cooling
kW
9,8
13,4
22,2
27,8
36.2*
52,1
60,9
88.1**
EER for compressor circuit
kW/kW
2,2
2,1
2,2
2,1
2.4*
2,0
2,2
2.2**
Total EER
kW/kW
11,0
10,2
10,6
10,2
11.9*
8,9
10,6
10**
Unit size
8
11
18
23
32
41
50
72
Heating Performance Outdoor temperature 50 % Humidity
Exhaust temperature 50 % Humidity
5
0
-5
-10
-15
-20
22
22
22
22
22
21
Supply temperature
Air flow, m³/s
22
22
22
22
22
20
0,8
1,1
1,8
2,3
3,2
4,1
5
7,2
Total Heating capacity
kW
26,9
36,9
59,1
76,1
102,5
131,4
161,9
228,1
Compressor heating
kW
20,1
2,3
3,1
5,0
6,4
9,0
11,5
14,0
COP for compressor circuit kW/kW
6,7
6,8
6,8
6,8
6,8
6,8
6,8
6,8
Total COP
kW/kW
45,4
52,4
59,5
63,8
65,2
68,0
70,3
71,2
Total Heating capacity
kW
33,3
45,6
73,2
94,2
127,0
162,4
200,7
283,0
Compressor heating
kW
3,1
4,1
6,8
8,6
12,0
15,4
18,7
27,1
COP for compressor circuit kW/kW
6,5
6,6
6,6
6,6
6,6
6,6
6,6
6,6
Total COP
kW/kW
46,1
51,7
57,1
60,3
61,3
62,9
65,1
65,0
Total Heating capacity
kW
39,9
54,7
87,7
113,1
152,8
194,5
240,2
339,8
Compressor heating
kW
4,2
5,8
9,5
12,1
16,8
21,5
26,2
37,8
4,8
4,7
4,5
4,5
4,6
4,3
4,7
4,5
COP for compressor circuit kW/kW Total COP
kW/kW
34,9
36,9
37,6
38,2
39,2
37,1
41,0
38,9
Total Heating capacity
kW
45,6
62,4
100,2
129,3
174,0
222,6
275,2
388,9
Compressor heating
kW
5,0
6,9
11,2
14,4
20,0
25,6
31,3
44,9
COP for compressor circuit kW/kW
3,6
3,5
3,4
3,4
3,5
3,3
3,5
3,5
Total COP
kW/kW
27,6
27,9
28,4
28,8
29,4
28,0
30,3
29,8
Total Heating capacity
kW
51,0
69,8
112,2
144,7
195,2
249,8
308,3
435,3
Compressor heating
kW
5,8
8,0
13,0
16,7
21,6
29,6
36,3
52,3
COP for compressor circuit kW/kW
2,9
2,9
2,9
2,8
3,0
2,8
3,0
3,0
Total COP
kW/kW
22,8
22,9
23,3
23,4
26,2
23,4
25,0
24,4
Total Heating capacity
kW
53,4
73,0
117,6
151,2
203,6
260,7
322,3
455,8
Compressor heating
kW
5,7
7,7
12,6
16,2
21,6
28,7
35,3
50,8
COP for compressor circuit kW/kW
2,8
2,9
2,9
2,9
3,1
2,9
3,0
3,0
Total COP (incl.el.heater)
8,1
8,2
8,2
8,2
8,2
8,0
8,2
8,1
kW/kW
* the supply air temperature is 21 °C. ** the supply air temperature is 20,5 °C.
Fläkt Woods
9566 GB 2016.03.17
Specifications are subject to alteration without notice
fwg-ReCOOLER HP-2016.03.17 9566 gb © Copyright 2015 fläkt woods group
WE BRING better AIr TO LIFE
™
with over a century of innovation and expertise to share with our customers, fläkt woods is a global leader in Air Technology products and solutions. we specialize in the design and manufacturing of a wide range of products and solutions for Air Movement, Air Treatment, Air distribution, Air Management and Air diffusion with focus on two major benefits – Air Comfort and Fire Safety. with market presence in 65 countries we are in a unique position to be a local supplier and an international partner in our customer’s projects. Our product brands such as sEMCO®, eQ®, eQ Prime®, JM Aerofoil®, Econet®, veloduct®, Optivent®, Econovent® and Cleanvent® are well-known and trusted by customers all over the world to deliver high quality and energy efficient solutions.
» To learn more about our offering and get in contact with your nearest sales representative please visit www.flaktwoods.com
WWW.FLAKTWOODS.COM
ReCooler HP | 9566 GB | 2016.03.17
