Cold Storage, Insulation & Refrigeration Compared | Kam Hing

Hong Kong is a centre for international trade and the diffusing of foodstuffs, unfrozen meat and seafood trade, food production, cold chain logistics, drug storage and red bar storage. The quality of goods is guaranteed by a stable low-temperature environment. However, a number of owners are looking for them.Cold room Engineering CompanyAt times, it is often manipulated by ⁇ cold room engines, ⁇ refrigeration engineering aluminium, ⁇ insulation work pumps, ⁇ rigerated warehouse works so as to ⁇ chilled room blankets, ⁇ freezer room plutonium, ⁇ walk-in cold room clouds, etc., to extract a head water. This paper provides an engineering perspective to compare the definitions, processes, materials, regulations, price factors and maintenance elements of these types of work each year to help you in planning.Cold room、Installation of cold roomorCold Room RepairsThe correct concept was first developed.

I. Is the four major works? Table 1

Engineering category	Simple definitions	Core process/cluster	Typical applications
Cold room engineering(cold storage facility works)	Construction of a complete low-temperature storage space	Reservoir design, cold room plate packing, cold room gate, refrigeration system, electricity and temperature control	Food refrigeration, pharmacies, Wine cellar, restaurants freezer room
refrigeration engineering(refrigeration engineering)	Dumping of heat in refrigeration systems, establishment and maintenance of low temperatures	compressors, refrigerators, inflated devices, evasorators (refrigerator), chillers, refrigerant	cold room, freezer room,walk-in cold room, commercial cooking and refrigeration
insulation work	Obtaining external heat entry into low temperature space	cold room plate, floorthermal insulation, piphermal insulation, corn sealing, lecreening	All cold room, refrigerated warehouse and frozen pipes
refrigerated warehouse engineering(refrigerated warehouse engineering)	Refrigeration of large warehousing or logistics applications	Multi-temperate sector planning, large cold room door, crane and access cooperation, reserve refrigeration arrangements	Cold chain logistics, foodrefrigerated warehouse, export and import stores

Cold room engineering (cold storage facility works)

Cold room engineeringThe concept of a blanket engineering plutonium: the site size, determination of treasury size and temperature, to cold room plates and cold room gate, installation of refrigeration unit, electrical power and temperative receptacle, all of which fall within the scope of the cold room project. In other words, the work of refrigeration engineering and insulation is an integral part of cold room works. cold room, which is more than zero and dominated by refrigeration, generally referred tocold storage facilityRelated worksCold Storage Facilities。

refrigeration engineering (refrigeration engineering)

refrigeration engineeringWheeled refrigeration system plutonium per se. Frequent compression refrigeration systems are compressed by compressors, refrigerant (refrigerants) is scattered by cold concretes to outflow heats, inflated devices, and incubators (refrigerator) absorb thermal volumes in the bank, which are constantly moving the courier hot to outside the bank. The chrome, type and installation of the refrigeration system determines whether the cold room can operate steadily at the target temperature.

insulation work

insulation workThe task is to protect the cold gas. Even if the refrigeration unit is re-enriched, refrigeration units will continue to lose when the treasury is inadequate insulation, unfavourable seal or floorthermal insulation treatment, and refrigeration units are operating for long periods, with increased electricity consumption and fluctuating within the bank. In Hong Kong, wet-to-weather heats and insulation work must take into account both wave prevention and concrete protection.

refrigerated warehouse engineering (refrigerated warehouse engineering)

refrigerated warehouse engineeringIt can be understood that cold room works are magnified. In addition to refrigeration and thermal insulation, the warehouse is operated in conjunction with the cargo craft layout, the forklift gate or fast door, the post of arrival and departure, multi-temperature segregation, and the system reliability and backup programme under long operations. Extended reading:Full guidance for refrigerated warehouse engineering in Hong Kong。

II. chilled room,freezer room,walk-in cold room, cold storage facility, refrigerated warehouse: call law compared with temperature

⁇ chilled room plutonium, ⁇ freezer room tumours, ⁇ walk-in cold room fingerprints are commonly used in the Hong Kong industry and catering industry. The same reason is that of thermal insulation treasury refrigeration systems, mainly at temperature and for use:

Call law	Common meaning	Common temperature range	Common uses
chilled room/cold storage facility	Refrigeration for fresh use	Approximately 0°C to +5°C	apples, dairy products, beverages, cereals
Drugcold storage facility	Pharmaceutical storage	Frequent +2°C to +8°C (based on product storage statement)	Drugs and medical supplies to be cooled
wine cellar/brew	Wet-water storage	Approximately +12°C to +14°C and control humidity	Brothers and other bars to be kept in constant temperature
freezer room／walk-in cold room	Refrigerated storage uses	Approximately -18°C to -25°C	Unfrozen meat, frozen seafood, emergency foods, pumps
Quickfreezer room/emergencyfreezer room	Rapid refrigeration	Approximately - 30°C or less	Rapidly refrigerated foods to maintain quality
refrigerated warehouse／refrigerated warehouse	Large refrigerated warehouse storage	Established by goods, permanent multi-temperature zone	Cold chain logistics, wholesale and import and export

Note: The above is a common area for the industry, and actual temperatures are to be set according to the inventory of luxury goods, industry norms and operational requirements. The Hong Kong Food Safety Centre recommends that the ice be maintained at 4°C or below, 18 degrees Celsius or below, as a basic reference for food refrigeration and refrigeration.

Therefore,chilled room engineering、freezer room engineering、walk-in cold room engineeringEssentially, it is cold room works, but the temperature and configuration are different;chilled room installation、freezer room installedandwalk-in cold room installedThe process is roughly the same as cold room plate thickness, cold room door configuration, floor processing and refrigeration unit selection.

III. How the four major projects complement each other

refrigeration engineering,insulation work, refrigerated warehouse works and cold room works are not alternative options but rather different dimensions of the same system:

• insulation work determines how much of the refrigerant is lost: The better insulation, the lower the required refrigeration.
• refrigeration engineering decision refrigeration was not sufficientrefrigeration unit is calculated by cold room capacity, target temperature, volume of entry, number of openings and environmental temperature.
• Cold room engineering integrates both: Together with cold room gate, electricity, temperature control and water, it is a low-temperature space that can be used on a daily basis.
• refrigerated warehouse engineering plus warehousing operationsReliability of multi-temperature zones, material flow lines and systems under large scales.

For example, a walk-in cold room opens in a restaurant with high frequency and limited space, focusing on the cold room door location, gate sealing and refrigeration unit dispersed hot positions; A logistics refrigerated warehouse would take into account the loss of cools in large cold room door, forklift access and multi-temperature segregation. Both are cold room works, but the design focus is quite different.

IV. Einsulation work comparison: thermal insulation materials and cold room plate

Common thermal insulation materials comparison

Materials	Thermal coefficient (approximately)	Special characteristics	Common uses
PU/PUR	Approximately 0.022–0.025 W/m K	Thermal insulation efficiency, one of the most commonly used cold room plates	Most cold room, freezer room, refrigerated warehouse
Mindanao Crude	Approximately 0.036–0.042 W/m K	Flammability is better, but thermal insulation is less effective than PU, and equalthermal insulation requires more thickness	High fire-resistant position

Note: The guided thermal coefficients and fire level vary according to product formulation, density and test criteria, which shall be selected on the basis of the producer ' s product specifications and testing report and in conjunction with building and firefighting requirements.

How can cold room thickness be chosen?

The common thickness of cold room plates is about 75 mm to 150 mm or above. The general principle is the lower the target temperature and the more demanding cold room plates: refrigerated stock can be used in smaller cold room plates, while -18°C or less freezer room, walk-in cold room and refrigerated warehouses generally require a relatively high cold room plate to control the loss of refrigeration and outward wall concrete. The physical thickness shall be calculated on the basis of temperature, environmental temperature and energy consumption requirements.

floorthermal insulation and concrete

(a) Freezer room and refrigerated warehouses below zero, with the exception of walls and flowers, floors to be thermal insulation; Large-scale refrigerated warehouses with long-term low temperatures are more important to consider floor protection measures and avoid the structural problem of refrigeration under floor. The refrigeration pipes are also subject to charactermal insulation, otherwise the surface of the pipes is easy to click water. These details are all of these.insulation workAn important part. Extended reading:Hong Kong Insulation Work Complete Guide、Insulation work price options guide。

V. refrigeration engineering comparison: refrigeration system, soluble approach and refrigerant regulations

Type of common compressors

• Active compressorsTechnical maturity, common to small and medium-sized cold room and commercial refrigeration equipment.
• Cyclone compressors: The function is smoother and the noise is low, often in small- and medium-sized concreterefrigeration unit.
• Aluminium compressors: The refrigeration is larger and more visible in large refrigerated warehouses and industrial refrigeration systems.

The selection of types of compressors is determined by cold room capacity, temperature, time of operation and budget, and the efficiency of different brands and models varies.

Concrete refrigeration unit and cooling machine configuration

It is common practice to install the refrigerator (sprayers) in the bank and to place the cold concreterefrigeration unit in a well-vented position outside the bank for pipe connections. The soundness of the heat of the cold refrigeration unit would have a direct impact on refrigeration efficiency; If the refrigeration unit is placed in a closed or high temperature position, it is easy to raise issues such as excessive pressure and inadequate refrigeration during the summer.

Comparison of solvent modes

There is a cold room below zero, where the cold wind surface will be gradually crubbed and will have to be solved on time, otherwise winds are reduced and treasury is difficult to maintain. Common approaches include:

• Suspensive natural soluble: Applies to the cold storage facility at or above minus temperature.
• Electrical heat soluble: Catalogues with electro-heat components, often in small and medium-sized freezer room and walk-in cold room.
• Heat gas solvent: High temperature refrigerant gas solvents released using compressors are more visible in larger systems.

Solubility cycles are not properly set, or solvent defects are one of the common causes of unfreezer room ' s thickness and low temperature.

refrigerant (refrigerants) and Hong Kong regulations

Hong Kong regulates refrigerants under the Regulations for the Protection of the Ozone Layer (Chapter 403), a number of owners do not necessarily mention this:

• HCFCs (for example, R22)(a) Substances that deplete the ozone layer, and imports for local use have been reduced by 100 per cent from 1 January 2020; Between 2020 and 2029, only 10.5 per cent of the 1989 baseline was allowed for maintenance of air conditioning and refrigeration equipment. Oldcold room for R22 is still used and future maintenance may be faced with the supply of refrigerant, which should be planned for replacement at an early stage.
• HFCs (e.g. R404A, R410A, R134a): The ozone layer is not consumed, but the global warming potential (GWP) is high. Hong Kong amended its regulations in April 2025 to include HFCs as controlled substances, with import and export licensing and quota controls effective 1 December 2025 and subject to a reduction of the use of HFCs from the baseline level by 85 per cent by 2036.
• Alternative refrigerantLow GWP alternatives are available on the market, such as hydrofluorocarbons (HFOs) and hydrocarbons (e.g. R290), but partially flammable or toxic, subject to safety requirements for eligible personnel.

Therefore, the long-term supply, maintenance facilities and regulatory trends of refrigerant should be considered in addition to initial pricing when new cold room or replacement of refrigerant is established.

VI. Cold room installation comparison: combination cold room and earth-building cold room

Comparative projects	Portfolio cold room (cold room board)	Cold room
Structure	Plant prefabricated centinsulated panels, on-site loading	Subject of construction structure, addthermal insulation layer
Construction	Lower number of on-site processes, generally faster completion	In relation to civil construction processes, the length of work is generally longer
Flexibility	Available in space, then more easily adapted, expanded or unloaded	Changes are more difficult
Application	Dining room freezer room,walk-in cold room, commercialcold room, medium refrigerated warehouse	Cold room for specific large projects or synchronized with buildings

Hong Kong commercial cold room is mainstreamed in combination cold room owing to the lower number of works and the availability of on-site spaceCold roomIt is also more appropriate for the construction restrictions of business units. GeneralInstallation of cold roomProcesses include needs awareness and on-site assessments, cold room design, bids and confirmation specifications, cold room board and equipment fixing, loading and thermal insulation processing, refrigeration systems and electrical installation, vacuum and refrigerant, pilot machine transfer, receipt and maintenance arrangements. Detailed steps can be taken with reference to the first pageThe Cold Room Installation ProcessPre-installation attention is readHong Kong cold room work is a matter of full attention。

VII. Cold room price comparison: factors affecting bids

On the web site, it is not always seen in the ⁇ cold room for more than a few money, but each cold room has different sizes, temperatures and on-site conditions, and the price alone is easily misconstrued. Comparisoncold room priceThe following elements should be understood first:

Factors	Impact on price
cold room size and capacity	The greater the capacity, the higher cold room plate and refrigeration load
Target temperature	freezer room,walk-in cold room and refrigerated warehouse thancold storage facility need more thickthermal insulation and greater refrigeration
Cold room thickness and chromium	Impactthermal insulation effectiveness, fire resistance and costs
Cold room gate and quantity	Differences in the cost of valves, lateral moves, fast gates and large doors
refrigeration unit type and horses	Effect on initial construction costs and future consumption of electricity and maintenance
Long pipe and refrigeration unit location	The greater the distance, the more complex the line and the more complex the process
Electricity supply conditions	Additional electrical works may be required when there is insufficient power on the ground
Site location and construction restrictions	Costs will be affected by building, passage, delivery and construction

In comparing the price, it should be requested to specify cold room plate specifications, cold room door, refrigeration unit models, tubes, electricity and maintenance arrangements in order to match the specifications with reference value. Extended reading:Hong Kong Cold room complete guide for the price of works、refrigerated warehouse project value comparison guide for Hong Kong、refrigeration large comparison of engineering costs in Hong Kong。

VIII. Cold room maintenance and cold room maintenance

Cold room maintenance: periodic inspection of projects

Most of the cold room and refrigerated warehouses are operating on a regular basiscold room maintenanceProblems could be identified at an early stage to reduce the loss of sudden shuttle and cargo. refrigeration unit maintenance services in the flash, inspection projects include high-pressure pressure, low-pressure pressures, high-pressure dusts, oil ballasts, heat pumps of hanging machines, helmet spectrometers, bulk heat plating turbines, soluble fluid flow, COIL drills, etc.

cold room maintenance: common problems

• cold room frozen/temperate landingrefrigerant is likely to be inadequate or leaked, heat stoves, gate seals or compressors malfunction.
• Unfrozen COIL filters: It may be a dissolved spectre, an inappropriate design of the soluble cycle or overly frequent openings.
• Water leakage, drip: It may be tricked or refrigerated, or thermal insulation is less visible.
• refrigeration unit frequencies: It may be associated with pressure anomalies, stress ramps or temperature-control creation.

In the event of anomalies in cold room, it is for technicians to examine the reasons by means of the instrument and then to carry out the process.Cold Room Repairs. Detailed reference to the first pageCold room maintenance inspection projectandPrevalence of cold room repairs。

IX. How to select refrigeration engineering companies: checklists

Extended reading:refrigeration Engineering Selection Analysis, Hong Kong、refrigerated warehouse engineering firm selection analysis。

Concerning Kam Hing Engineering and Trading Co. Limited

Kam Hing Engineering and Trading Co. Limited isHong Kong cold room engineering companyFor Buildings Department, Minor Works Contractor and Electrical and Mechanical Services Department Registered Electrical Contractor, specializing in various types of cold room, thermal insulation and maintenance works. Engineering includes large pharmaceutical warehousing, logistics warehouses, Wine cellar and food refrigerated warehouse services, including project design, procurement, installation, periodic inspection and maintenance; Clients include large meals, business management companies, hotels, businesses and government agencies. More:Services、Project gallery、Our clients、About us。

X. PRACTICES

Extended reading: more cold room information

• Full comparison of work, refrigeration engineering, refrigerated warehouse engineering, cold room works
• refrigeration complete guidance on engineering
• Full guidance for refrigerated warehouse engineering in Hong Kong
• Complete guide for cold room price valents
• All cold room information articles