Installation & Maintenance
Balanced Ventilation
Air Exchangers exchange stale indoor air with fresh air from the outside. Heat recovery ventilation (HRV) is a system that exhausts air from inside of a home and replaces it with outdoor air. Energy recovery ventilation (ERV) is a system that does everything that an HRV does with the addition of transferring moisture from the exhausted air into the air entering the home and restricting moisture from incoming air. Maintenance of Ventilation Systems
Ductwork Air Flow Balancing
Balancing air systems (ductwork) may be accomplished in various ways. The most common method to accomplish ductwork balancing is Proportional Method. Each diffuser is adjusted to supply the right percentage of total air volume in the ductwork.
Valve Sizing And Actuator Selection
In this guide, you will be provided with the 18 steps on how to properly size and select valves, actuators and assemblies.
Copeland Refrigeration Manuals Download
This is a five series of publications comprising the Emerson Climate Technologies, Inc. Refrigeration Manual. Although each separate part covers a specific area of refrigeration theory and practice, each successive publication presumes a basic understanding of the material presented in the previous sections.
Refrigerant Piping (Part1)
Good piping design results in a balance between the initial cost, pressure drop, and system reliability. The initial cost is impacted by the diameter and layout of the piping. The pressure drop in the piping must be minimized to avoid adversely affecting performance and capacity. Because almost all field-piped systems have compressor oil passing through the refrigeration circuit and back to the compressor, a minimum velocity must be maintained in the piping so that sufficient oil is returned to the compressor sump at full and part load conditions. Several HVAC systems require field refrigeration piping to be designed and installed on-site. Examples include Condensing units, Direct expansion (DX) coil in air handlers, Remote evaporators with air-cooled chillers and Chiller with a remote air-cooled condensers. This Guide covers R-22, R-407C, R-410A, and R-134a used in commercial air conditioning systems.
Maintaining And Cleaning Stainless Steel
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.
Parallel Chiller System
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.
Refrigerant Piping – part2
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.
Troubleshooting Common Issues with Irrigation Pumps and Valves
Irrigation systems require regular maintenance to ensure optimal performance. Learn about common problems with pumps and valves, such as low pressure, reduced flow, and leaks, and find out how to troubleshoot and prevent these issues. Regular maintenance and prompt attention to problems can help extend the life of your system components and keep your landscape healthy.
Commissioning
Ductwork Air Flow Balancing
Balancing air systems (ductwork) may be accomplished in various ways. The most common method to accomplish ductwork balancing is Proportional Method. Each diffuser is adjusted to supply the right percentage of total air volume in the ductwork.
The Commissioning Process
commissioning process – a quality oriented process for achieving, verifying, and documenting that the performance of facilities, systems, and assemblies meets the defined objectives and criteria.
Hvac Component Start Up
HVAC (Heating, Ventilation and Airconditioning) component start-up procedures describe how to start the operation of each component. They specify the methods to be used and the checks that are needed. Start-ups and related measurements are carried out by the contractor. Commissioning provider assists the contractor in the beginning of each start-up process and reviews that no systematic errors are made.