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Views: 0 Author: Site Editor Publish Time: 2026-09-28 Origin: Site
XB Refrigeration Co., Ltd. specializes in Cold room installation across Thailand, delivering complete refrigeration system construction for fruit and vegetable preservation rooms, low-temperature freezers and industrial cold stores. As a core pressure vessel in refrigeration systems, liquid receivers store liquid refrigerant, separate gas and liquid, and maintain stable refrigerant supply. Thailand features year-round high temperature and humidity, with ambient temperatures exceeding 40°C at peak. Improper selection or installation of liquid receivers may lead to unstable refrigerant supply, reduced cooling efficiency, and even liquid slugging damage to compressors. Combined with tropical operating conditions, this article introduces parameter comparison and practical installation techniques for Cold room liquid receivers.
Cold room liquid receivers fall into three main categories: high-pressure vertical receivers, high-pressure horizontal receivers, and low-pressure circulating receivers, suited for Cold room systems of different scales. Proper selection directly impacts system stability. The table below compares key parameters of the three types:
Type of Liquid Receiver | Applicable Cooling Load | Recommended Volume Ratio to Total Refrigerant Charge | Space Requirement | Stability Under High-Temperature Tropical Conditions | Main Cold room Applications |
High-pressure Vertical Liquid Receiver | ≤30kW | 30%~40% | Compact footprint, ideal for cramped machine rooms | Fair, limited heat dissipation area | Small commercial preservation rooms, split condensing units |
High-pressure Horizontal Liquid Receiver | 30~120kW | 40%~45% | Horizontal layout requiring longer machine room space | Excellent, larger heat exchange and dissipation area | Medium-sized fruit and vegetable cold stores, supermarket cold rooms |
Low-pressure Circulating Receiver | ≥120kW | 45%~50% | Large floor area, requires ammonia pumps | Good, adapts to large load fluctuations | Large industrial cold stores, cold rooms with multiple parallel compressors |
As shown in the table, high-pressure horizontal liquid receivers are the preferred choice for medium-sized commercial Cold room. They perform better in heat dissipation under Thailand’s high temperatures and deliver more stable refrigerant supply. Vertical receivers work well for small cold stores with limited machine room space, while low-pressure circulating receivers are adopted for large multi-parallel-unit Cold room to guarantee stable refrigerant supply under heavy loads. XB Refrigeration Co., Ltd. customizes liquid receiver solutions for Cold room installation projects based on cooling capacity, machine room layout and refrigerant type.
The capacity of a liquid receiver should neither be over-sized nor under-sized. Insufficient capacity leaves little refrigerant reserve when Cold room load fluctuates, causing insufficient liquid supply to expansion valves and a 10%~15% drop in cooling capacity. Excessively large receivers trap refrigerant for extended periods, increasing heat loss and long-term power bills.
For Thailand’s hot climate, reserve 10% extra capacity in liquid receivers to accommodate refrigerant thermal expansion during shutdown. Under normal conditions, the filling ratio must not exceed 80% of tank volume to reserve expansion space and avoid overpressure risks. Tank materials must match refrigerants: carbon steel anti-corrosion tanks for R404A and R134a fluorine systems, and special ammonia-resistant pressure vessels for ammonia systems, to prevent tank corrosion and leakage in hot and humid environments.
Liquid receivers are generally installed after condensers and before expansion valves to realize gravity-fed stable refrigerant supply. The verticality tolerance of vertical receivers shall be controlled within 0.1mm/m, while horizontal receivers must stay level with a tilt deviation no more than 0.1mm/m. The condenser liquid outlet should be higher than the receiver inlet to create a liquid level difference and reduce refrigerant flow resistance.
Manual shut-off valves must be fitted on inlet and outlet pipelines for refrigerant recovery during maintenance, without draining the whole system. For Cold room with multiple parallel units, equalizing pipes shall be installed between receivers to balance internal pressure and prevent excessive liquid level differences. In rainy and humid regions across Thailand, pipe joints require anti-corrosion and waterproof sealing to reduce rusting and leakage risks.
Liquid receivers are pressure vessels, and safety attachments are critical checkpoints for Cold room installation and cannot be omitted. Every receiver must be equipped with a safety relief valve, pressure gauge and liquid level sight glass. Relief valves require annual calibration, and pressure gauges are inspected every 6 months. Relief valve discharge openings should face open outdoor areas away from operator walkways.
After Cold room installation, liquid receivers need air tightness testing at 1.05 times the design pressure, holding pressure for 30 minutes. Use soapy water to inspect welds, flanges and valves; commissioning can only start after confirming zero leakage. In high-temperature zones, install sunshades for receivers to avoid direct sunlight that triggers abnormal pressure spikes inside tanks.
Liquid receivers are vital components for stable Cold room refrigeration operation. Under Thailand’s hot and humid climate, Cold room installation requires comprehensive planning covering receiver type selection, capacity calculation, pipe routing and safety accessories. Horizontal liquid receivers offer superior overall performance for medium commercial Cold room. Strictly control level and vertical accuracy during installation, and implement pressure protection and anti-corrosion work to cut down system failures and extend the service life of compressors and the whole Cold room equipment. XB Refrigeration Co., Ltd. holds rich local experience in pressure vessel installation in Thailand, providing one-stop Cold room engineering services including liquid receiver selection, on-site installation and annual inspection & maintenance.
A1: The normal filling ratio shall not exceed 80% of tank volume. It is recommended to keep it below 75% in tropical high-temperature areas to reserve room for thermal expansion.
A2: Horizontal liquid receivers feature a larger heat dissipation area, smaller pressure fluctuations under Thailand’s high temperatures, and are more suitable for medium-sized commercial Cold room.
A3: Continuous operation is not recommended. The safety valve provides overpressure protection. Failure may cause pipe burst and refrigerant leakage, and the unit must stop for repair immediately.
