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Refrigerant Piping – part2

Refrigeration

In this post, we will be continuing our comprehensive training on how to size refrigerant piping. We will cover all the important aspects of this process, including determining the pipe size, pressure drop, and other factors. We will also discuss topics such as sizing refrigerant lines, equivalent length for refrigerant lines, and how to determine equivalent length. With this training, you will have the knowledge and confidence to size refrigerant piping accurately and correctly in any situation.

HVAC

There are many different types of HVAC systems available, each with their own advantages and disadvantages. Some of the most common and best HVAC systems include split systems, packaged systems, variable refrigerant flow systems, geothermal systems, ductless mini-split systems, boiler systems, radiant heating systems, heat recovery ventilation systems, chilled beam systems, and evaporative cooling systems. The choice of the best system will depend on the specific needs of the building and its occupants, as well as the climate and local building codes.

Piping

Pipe insulation is crucial for maintaining energy efficiency, temperature control, condensation control, noise reduction, and safety. ASHRAE provides specific thickness recommendations for different pipe sizes and temperature ranges in its standard 90.1. When selecting pipe insulation based on ASHRAE standards, it’s important to consider the temperature, pipe size, environmental considerations, fire resistance, and energy efficiency.

Calculator, Piping

Cv, or coefficient of velocity, is a measure of the flow capacity of a valve. It represents the number of gallons per minute (GPM) of water at 60°F that will flow through a valve with a one-inch opening at a pressure drop of one pound per square inch (PSI). Cv can be calculated using various formulas, such as the one based on water at 60F and one that takes into account the specific gravity of the fluid. Cv is a theoretical value and it may vary depending on the actual conditions of the valve. When selecting a valve for a specific application, it is important to consider the Cv in relation to the flow rate and pressure drop requirements of the system, as well as other factors such as ease of maintenance, cost, and safety.

Calculator, Refrigeration

These formulas are commonly used in the field of refrigeration and air conditioning to calculate various performance parameters of a refrigeration system such as compression work, compression power, coefficient of performance, net refrigeration effect, capacity, compressor displacement, heat of compression, volumetric efficiency, and compression ratio. These formulas are based on the thermodynamics principles and are generally used to evaluate the performance of the refrigeration system and to optimize its design.

Calculator, HVAC

Air conditioning condensate is the water that is produced as a result of the cooling process in an air conditioning system. When the air conditioning system cools the air in a building, it removes moisture from the air, which condenses on the cool coils of the air conditioning system. This condensation is collected and drained away through a condensate drain pipe. The water that is collected in the condensate drain is typically referred to as air conditioning condensate.

Equipments, Refrigeration

A refrigeration capillary tube is a small, narrow tube that is used in refrigeration systems to control the flow of refrigerant. It is typically made of copper or other highly conductive metal, and is used in conjunction with a compressor, evaporator, and condenser to transfer heat from one location to another. The capillary tube is placed between the evaporator and the compressor in the refrigeration system, and it acts as a metering device to control the flow of refrigerant.

Equipments

A booster pump is a type of pump that is used to increase the pressure of a liquid or gas. This type of pump is commonly used in water systems, such as in municipal water supply systems or in irrigation systems, to increase the pressure of the water so that it can be transported over long distances or through small pipes. Booster pumps can also be used in other systems, such as air conditioning systems or fuel systems, to increase the pressure of the fluid being transported.

Equipments

An air handling unit (AHU) is a device that is used to condition and circulate air in a heating, ventilation, and air conditioning (HVAC) system. AHUs are typically located within the building that they serve, and are responsible for cleaning, heating, cooling, and circulating the air within the building.

Equipments

Water tube boilers and fire tube boilers are two different types of steam boilers that are commonly used in industrial and commercial applications. Both types of boilers use a system of tubes to generate steam, but they differ in the way that the tubes are arranged and the way that the hot gases from the burner pass through the tubes.

Piping

Under unfavorable circumstances, damage due to water hammer may occur in pipelines measuring more than one hundred meters and conveying only several tenths of a liter per second. But even very short, unsupported pipelines in pumping stations can be damaged by resonant vibrations if they are not properly anchored. By contrast, the phenomenon is not very common in building services systems, e.g. in heating and drinking water supply pipelines, which typically are short in length and have a small cross-section.

General, HVAC

With HVACR work being in such high demand, it’s important to stand out from the crowd when applying for a job. A great way to do that is with a quality resume and cover letter. Since these two documents are often the first things that a potential employer sees about you, catching their attention is critical. With that in mind, here are some tips to build the best resume possible.

Softwares

Coolselector®2 (from Danfoss company) helps to optimize energy consumption and increase efficiency in any HVACR system. Run unbiased calculations based on a set of operating conditions — such as cooling capacity, refrigerant, evaporation, and condensation temperature — and then select the best components for your design.

Equipments, Refrigeration

The expansion valve regulates the amount of compressed liquid refrigerant moving into the evaporator. It removes pressure from the liquid refrigerant to allow expansion or change of state from a liquid to a gas in the evaporator.
In order to properly select Expansion Valves one should pay attention to the items that we mention in this post.

Commissioning, Equipments, General, HVAC, Piping

Corrosion is usually referred to as the degradation of the metal by chemical or electrochemical reaction with its environment, see figure 1. When considered broadly, corrosion may be looked upon as the tendency of the metal to revert to its natural state similar to the oxide from which it was originally melted. Only precious metals, such as gold and platinum are found in nature in their metallic state.
– Types of corrosion
– Uniform corrosion
– Pitting corrosion
– Crevice corrosion
– Intergranular corrosion
– Selective corrosion
– Erosion corrosion
– Cavitation corrosion
– Stress corrosion cracking (SCC)
– Corrosion fatigue
– Galvanic corrosion

Equipments, Piping

Long-coupled pumps are pumps with a flexible coupling that connects the pump and the motor. This kind of coupling is available either as a basic coupling or as a spacer coupling. If the pump is connected to the motor by a basic coupling, it is necessary to dismount the motor when the pump needs service. Therefore, it is necessary to align the pump upon mounting.

Equipments, Piping

Stage pumps are an essential component of many industrial and commercial operations. They are designed to efficiently move water, oil, and other liquids from one place to another. Stage pumps are highly reliable, robust, and can be used in a wide variety of applications. They are also cost-effective, energy-efficient, and easy to maintain, making them a popular choice for businesses looking for a reliable and efficient pumping solution.

In HVAC/R & Solar systems, single-stage pumps are used for cooling tower water circulation, make-up water to water systems, and glycol-water mixture circulation. These pumps can also be used to control the water level in tanks and basins. With proper selection and sizing, single-stage pumps are reliable, cost-effective solutions for many HVAC/R & Solar applications. Single-stage pumps have a simple construction and are easy to operate and maintain, making them a great choice for many HVAC/R & Solar professionals.

Equipments, Piping

In the continuation of the investigation of the building and types of pumps, this post. The centrifugal pump has several characteristics and in this section, we will present the most important ones. Later on in this part we will give a more thorough description of the different pump types.

Equipments, Piping

In 1689 the physicist Denis Papin invented the centrifugal pump and today this kind of pump is the most used around the world. The centrifugal pump is built on a simple principle: Liquid is led to the impeller hub and by means of the centrifugal force it is flung towards the periphery of the impellers. The construction is fairly inexpensive, robust and simple and its high speed makes it possible to connect the pump directly to an asynchronous motor.

Control

Chilled water is circulated by the chilled water or primary pump through both chillers to the load and back to the chillers. The chilled water loop can
be either constant flow or variable flow. Variable flow systems increase the complexity but offer significant pump work savings. They also resolve the issue about chiller sequencing that occurs with parallel chillers, constant flow.
To provide some redundancy in the HVAC design, most designers will require two or more chillers. Multiple chillers also offer the opportunity to improve on overall system part load performance and
reduce energy consumption. Parallel chiller plants are straightforward to design and are easily
modified for variable primary flow.

Equipments

Selection of quieter equipment can eliminate many noise problems before they even begin. Treatment options along the path are the next best option and can include silencers, barriers, absorption, lagging, or other options. The last resort is typically treatment at the receiver, with hearing protection for loud occupational exposure.

Softwares

Carrier’s PLV Pro is a software tool that empowers consulting engineers to make objective and informed decisions about their chiller plant design that go beyond Full Load and IPLV metrics. Results are provided in a professional report or .csv format for further analysis. The tool is for professionals who need a quick and free-of-charge alternative to detailed energy modeling analyses.

HVAC

Variable Air Volume (VAV) systems are the most widely used types of HVAC air systems for medium- and large-sized commercial building projects (projects larger than 10,000 ft2) because VAV systems are flexible, energy efficient, and provide a comfortable indoor environment. VAV systems deliver variable supply airflow at a constant temperature (typically 55°F) through the primary air duct to multiple VAV terminal units, each of which serves a separate temperature zone. Each VAV terminal unit contains a motor-operated damper that modulates the primary airflow to the zone, an inlet airflow sensor, and, in some instances, a heating coil and a small recirculating air fan.

HVAC

HVAC air systems can be either centralized or decentralized. Centralized air systems receive their cooling and heating energy from a remote central plant. Decentralized HVAC air systems contain the central heating and cooling plant equipment within the air system itself. HVAC air systems can also be constant air volume (CAV) or variable air volume (VAV). CAV systems deliver constant supply airflow at a variable temperature. VAV systems deliver variable supply airflow at a constant temperature. CAV and VAV air systems can be further subdivided into systems that condition a single temperature zone and systems that condition multiple temperature zones.

Control

Free cooling systems can generate significant savings for the owners of such systems. However, the amount of potential energy savings available depends almost totally on the overall system design and on the selection of equipment for use in the system. In general, the designer must balance higher equipment cost with greater opportunity for energy savings. Fortunately, these savings — and their associated costs —are reasonably quantifiable so that designers can make intelligent choices guided by reliable information. This article will describe Capacity Control Methods in free cooling design schemes.

Control

Cooling towers are used to dissipate heat from air conditioning or industrial process systems. Many of the air conditioning systems currently in use only operate during the summer cooling season, but there are numerous air conditioning and process systems that require cooling year-round. In some cases, the entire cooling system is required to operate during the winter. The cooling tower is required to provide the same 85° F (30° C) or colder water to the system as it does in the summer, but it does so at lower ambient temperatures. However, there are some applications designed to use the cooling tower for “free cooling”. Free cooling is when chilled water is cooled by cooling tower water through the use of heat exchangers without the use of refrigerant compressors. Free cooling can be accomplished when ambient conditions allow the cooling tower to produce “chilled water” for the system.

Commissioning, Equipments, HVAC, Piping

Stainless steel provides its superior corrosion resistance by developing a surface film of chromium oxide during the manufacturing process. In order to ensure maximum corrosion protection, stainless steel must be kept clean and have an adequate supply of oxygen to combine with the chromium in the stainless steel to form “chromium-oxide”, a protective passivation layer. Stainless steel is the most cost effective material of construction available to extend the life of a cooling tower, closed circuit cooler or evaporative condenser in HVAC-R industry.

CAD & BIM

CARRIER Autodesk® REVIT® 3D Templates:

– Airside
– Chillers
– Ductless Systems
– Packaged Indoor
– Packaged Outdoor
– Split Systems
– Variable Refrigerant Flow

Refrigeration

This article is a continuation of our older article, which was well received by users, so we decided to update the P-H Diagram list and provide you with a more complete list of the world’s commercial refrigerants.
You can easily access the high quality refrigerant chart by clicking on the refrigerants listed in the table.

Refrigeration, Softwares

The application compares different systems based on a geographical location. Pack Calculation Pro is designed to compare different system designs, control strategies and refrigerants for your refrigeration or heat pump project, by calculating yearly energy consumption, as well as Life Cycle Costing (LCC) and Total Equivalent Warming Impact (TEWI).

Refrigerant Piping – part2

Best HVAC Systems

Pipe Insulation Guideline

The coefficient of velocity (Cv)

Calculator, Piping

Refrigeration Formulas and Calculations

Calculator, Refrigeration

Air Conditioning Condensate calculator

Calculator, HVAC

Capillary Tube Refrigeration

Equipments, Refrigeration

Booster Pump

Air Handling Unit (AHU)

Water Tube Versus Fire Tube Boilers

Water Hammer (Part1)

Build An HVAC/R Resume

General, HVAC

Coolselector Download

Expansion Valves Selection

Equipments, Refrigeration

What Is Corrosion?

Commissioning, Equipments, General, HVAC, Piping

Coupled Pumps

Equipments, Piping

Stage Pumps

Equipments, Piping

Pump Construction (Part2)

Equipments, Piping

Pump Construction (Part1)

Equipments, Piping

Parallel Chiller System

Silencer Types And Applications (HVAC)

Carrier Plv Pro Download

Variable Air Volume (VAV) Systems

Constant Air Volume (CAV) Systems

Cooling Towers (Capacity Control)

Cooling Towers (Free Cooling Operation)

Maintaining And Cleaning Stainless Steel

Commissioning, Equipments, HVAC, Piping

Carrier Revit Files

Refrigerant Ph Diagram (Part 2)

Pack Calculation Pro Software Download

Refrigeration, Softwares