--- title: 4. ECS slug: 20c1600k-bess/4-ecs description: 20C1600K datasheet docTags: createdAt: 2025-10-18T11:48:11.483Z --- ### 4.1. Heat dissipation design The 20C1600K container’ environmental control system includes the air conditioner and liquid Chiller unit. The liquid Chiller unit delivers low-temperature coolant to the copper tube inside the battery pack. The coolant will exchange heat with the cells inside the battery pack, and the heated coolant will return to the liquid Chiller unit. The radiator inside the liquid Chiller unit will release heat into the air outside the container. The air conditioner is responsible for maintaining the air humidity inside the container. When the humidity reaches the set value, the dehumidification function will be activated. The liquid Chiller unit contains components such as compressor, condenser, radiator, water pump, etc. Each battery pack is equipped with a heat dissipation copper pipe at the bottom. The heated coolant enters the liquid Chiller unit through the water pump, exchanges heat on the heat exchanger for the first cooling, and then cools down in the condenser for the second time. Finally, the cooled coolant is transported back to each pack to exchange heat with the battery cells. In the PACK thermal simulation experiment, the cell surface temperature is within the allowable range, and the functional safety control design is reasonable. The following conclusions can be drawn: 1\. The maximum temperature of the final battery cell in steady-state analysis is around 30 ℃; 2\. The maximum temperature of the battery cell is 30.57 ℃, the minimum temperature is 27.44 ℃, and the temperature difference between the monitoring points is 3.13 ℃; ::Image[]{src="https://api.archbee.com/api/optimize/-Cub6q8SIjDSydOx8r8ZR/rnePErxEqa-lepWqIzwY3_picture16.png" size="80" width="995" height="749" darkWidth="995" darkHeight="749" position="center" showCaption="false"} ::Image[]{src="https://api.archbee.com/api/optimize/-Cub6q8SIjDSydOx8r8ZR/3oGiFNCnzZldigaS-PC5h_picture17.png" size="50" width="473" height="528" darkWidth="473" darkHeight="528" position="center" showCaption="false"} ### 4.2. Environmental control system ### 4.2.1. Liquid Chiller Unit. Product Features: l Integrated design, saving on-site installation and debugging costs l Independent dual system design with high control flexibility l High energy efficiency variable frequency compressor, variable frequency design, efficient and energy-saving l Stepless speed regulation of compressor and intelligent regulation of cooling capacity l Intelligent speed regulation of fan, constantly matching with thermal load, efficient and energy-saving l Select RS485 interface to achieve remote setting and monitoring functions l Equipped with automatic start function for incoming calls and providing various alarm and protection functions l Environmentally friendly refrigerant that meets RoHS requirements l High reliability, 365 days/year uninterrupted operation l Small size and compact structure ::Image[]{src="https://api.archbee.com/api/optimize/-Cub6q8SIjDSydOx8r8ZR/iNGm5lzkvR5FAdu7CmJtm_picture18.png" size="50" width="654" height="1392" darkWidth="654" darkHeight="1392" position="center" showCaption="false"} ### Liquid Chiller unit Parameter | | Value | Unit | | ---------------------------------------------------- | -------------------- | ----- | | Quality & Installation | | | | Weight | 400 | kg | | Install | Floor type | | | Application environment | Outdoor | | | Environmental protection& performance | | | | Work environment | -30 to +55 | ℃ | | Storage environment | -40 to +70 | ℃ | | Noise grade | 80 | dB(A) | | IP protection level | IP X5 | | | Refrigerating fluid | R410A | | | Secondary refrigerant | 50% ethylene glycol | | | Cooling & Heating | | | | Cooling capacity\@L45/W18 | 40 | kW | | Heating capacity | 12.5 | kW | | Outlet water temperature | 18 | ℃ | | Circulating flow rate | | | | Rated circulating flow rate | 400\@150kPa | L/min | | Power loss | | | | Rated cooling input power\@L45/W18 | 21 | kW | | Rated heating input power\@Tu-10℃ | 14.0 | kW | | Self-circulation model (single pump operation) power | 0.94 | kW | | Max power loss | 23.9 | kW | | Power system | | | | Rated working power | 380 3N\~ 50Hz | V, Hz | | Support voltage range | 380±15%V 3N\~ 50±3Hz | V, Hz | | Maximum operating current (low voltage) | 58.5 | A | ### 4.2.2. Dehumidification Air Conditioner ::Image[]{src="https://api.archbee.com/api/optimize/-Cub6q8SIjDSydOx8r8ZR/-Qc0CCqHmxgqOhDwVCcI9_picture19.png" size="50" width="251" height="532" darkWidth="251" darkHeight="532" position="center" showCaption="false"} :::Iframe{code="
ItemValue
External Dimensions (Height x Width x Depth) 400x550x70mm
External Dimensions (Height x Width x Depth) With Flange400x587x70mm
Dehumidification mode operating temperature range18 ~ +45ºC
Requirements for drainage pipes10mm outer diameter water pipe
Refrigerant (Standard)R134a
Rated dehumidification capacity (27℃60%RH)2.4L/D
RoHS Compliant Yes
Dehumidification mode circulating air volume65m3/h
Rated dehumidification power (27℃60%RH)150W
Maximum operating power220W
Rated voltage220VAC
Rated current for dehumidification mode0.7A
Maximum operating current1.0A
Power supply range90VAC-300VAC
"} ::: ### 4.2.3. Air Conditioner ::Image[]{src="https://api.archbee.com/api/optimize/-Cub6q8SIjDSydOx8r8ZR/sRBhpNE3evOeoezwhpmwI_picture20.png" size="50" width="492" height="842" darkWidth="492" darkHeight="842" position="center" showCaption="false"} | Item | Value | | -------------------------------------------------------- | ------------------ | | External Dimensions (Height x Width x Depth) | 548x315x170mm | | External Dimensions (Height x Width x Depth) With Flange | 582x352x170mm | | Working Temperature Range | -40 \~ +55ºC | | Noise Level | 50dB(A) | | Protection from Dust, Water and Wind Driven Rain | IP 55 | | Refrigerant | R134a | | RoHS Compliant | Yes | | Anti-salt fog grade | C4-M | | Cooling Capacity\@L35/L35 | 600W | | Heating Capacity | 500W | | Refrigeration input power L35 L35 | 240W | | Refrigeration input current L35 L35 | 1.15A | | Internal circulation air volume (free air supply) | 120m3/h | | Power Supply Range | 220\~240,50\~60 Hz | | Max. Current | 2.3A | | Weight | 17kg |