When selecting a refrigeration unit for a new installation, select the unit to provide the desired cooling effect to reduce and/or maintain the temperature of the product. This capacity is typically expressed in Btuh. Unit coolers (evaporators), compressors and metering devices are all selected based on the Btuh requirement of the refrigerant selected. The only major component not selected based on this Btuh requirement is the condenser.

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The condenser must be selected for the total heat rejection (THR) of the system, which is the sum of the heat energy absorbed by the evaporator and the additional heat energy added to the refrigerant by the compressor. This additional heat energy is called the heat of compression. The heat of compression varies depending on the compressor design, so the compressor manufacturer&#;s information should be used whenever possible. If this information is not available, many condenser manufacturers will provide a reference table to determine this value.

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It is not always necessary to select an air-cooled condenser; many times, condensing units are selected for installation. Condensing units are selected based on the required Btuh capacity, and their condensers are selected by the condensing unit manufacturer. However, systems that use remote air-cooled condensers require a separate condenser selection.

To begin the selection process, first, determine the THR of the system by adding the heat of compression of the compressor (obtained from the compressor manufacturer&#;s or condenser manufacturer&#;s table.) If the condenser is installed above sea level, a correction factor needs to be applied to the THR. The condenser manufacturer will usually provide a table with the required correction factors.

Next, calculate the design temperature difference (TD), which is the design condensing temperature minus the design ambient temperature.

Design TD = condensing temperature &#; ambient temperature

Next, for the type of refrigerant in the system, use the condenser manufacturer&#;s selection chart to choose a condenser based on THR and design temperature differences. Some manufacturers&#; charts may show the capacity of their condensers at a 1°F temperature differential. If necessary, you can determine the TD required at 1°F by dividing the THR by the design condenser TD as follows.

THR/°TD = THR ÷ calculated design condenser TD

If the required THR is between the two condenser capacities on the selection table, select the higher of the two. For example, you are selecting a remote air-cooled condenser for a system with a net cooling demand of 225,000 Btuh. The condenser will be installed at sea level, so there is no need for a height correction factor. It is a low-temperature system with an R-404A semi-hermetic suction cooling compressor with a design evaporative temperature of -20°F, an ambient outdoor temperature of 90°F, and a design condensing temperature of 110°F.

Using this factor, the THR would be 348,750 Btuh (225,000 Btuh x 1.55). Design the condenser TD to be 20°F (110°F &#; 90°F).

Selecting the correct air-cooled condenser for the installation is an important part of ensuring the system operates properly and at maximum efficiency.

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CAS GYW COLD CHAIN SYSTEM (JIANGSU) CO.,LTD. is the professional cold room and refrigeration system designer, manufacturer and exporter. We have over 15 talented cold storage experts and 10,000 square meters factory. We had been providing cold storage solutions to over 60 countries to Asia, North America, East Europe and Commonwealth of Independent States. Our main products: cold storage design, polyurethane insulation panel, cold storage door, industrial door, condensers, air cooler, large scale parallel unit, ice machines, mobile cold storage and other cold chain products.

Applications of an Air Cooled Condensing Unit

Air-cooled condensing units are prefabricated systems customized to provide cooling for equipment and systems containing evaporators and expansion valve control systems where heat is generated.

These units include an air-cooled condenser, one or more compressors, and interconnecting pipes. They also have additional components like liquid receivers, filter driers, oil separators, shut-off valves, and related controls, all enclosed in a weatherproof unit.

Air cooled condenser for power plants offer energy efficiency, reduce water usage, and have lower operating costs, making them eco-friendly and cost-effective. Thermosag, a trusted Indian manufacturer of air cooled condensing unit, excels at offering products for power plants that are specially designed to be robust and efficient.

The company is the world’s best air cooled condensing units manufacturer supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

This blog explores the versatility of air-cooled condensers, a widely used application in various industries, including those mentioned below.

Power Generation

Air-cooled steam condensers find extensive use in all kinds of power plants, whether they are for thermal or nuclear power plants. ACC is indispensable in the condensation of steam expelled from the turbines. This process helps save energy and improves the overall efficiency of power generation.

These condensers are like nature&#;s coolers for power plants. They use the fresh air around them to cool down the hot steam from power plants, especially thermal or biomass ones. This helps keep the power plants running smoothly and efficiently while also being environmentally friendly.

Chemical Industries

Chemical industries utilize air-cooled condensers to achieve precise cooling or condensation of substances such as hydrocarbons, water, steam, and oil to fulfill their specific needs.

Petrochemical

Air-cooled condensing units can be used to cool down hydrocarbons, volatile organic compounds (VOCs), and other substances that require cooling for processing and environmental compliance in the chemical and petrochemical industries.

Refining Factory

The hot gasses and hydrocarbons generated during refining need to be cooled down using air-cooled condenser units to facilitate separation and processing. This cooling helps in the production of valuable refined products such as gasoline, diesel, and feedstocks.

Waste Heat Recovery

These condensers help save energy by cooling down steam from industrial processes so it can be reused again.

HVAC Systems

They&#;re used in air conditioners to cool down a special liquid, which saves energy and helps keep your indoor air comfortable.

Steam-Driven Generator

In power plants, these condensers turn steam back into water to save energy and make electricity.

Summing up An air-cooled condensing unit isn&#;t just a necessity but also an environmental requirement. That&#;s why, at Thermosag, we provide easy-to-install air-cooled condensers that don&#;t need air pipes. They&#;re low-maintenance, and you can avoid the condenser fouling problems often encountered in other air-cooled systems.

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