Commercial HVAC

Commercial HVAC category offers detailed information about Commercial HVAC systems.

Unit Heater Mechanical Room Equipment Protection

Unit Heater Mechanical Room Equipment Protection – Mechanical rooms have very important equipment that needs to be protected. Often mechanical rooms are not conditioned and subject to outside temperatures and freezing conditions that can freeze piping inside the mechanical. For that reason mechanical rooms often have unit heaters located there to protect piping and other things that […]

Chiller Barrel Evaporator for Chilled Water Systems | Air Conditioning

Chiller Barrel Evaporator – A chiller evaporator barrel exchanges heat between one refrigerant and another. Usually the primary refrigerant is R-22, R-134A, or some other blend or alternative HFC. The secondary refrigerant is water. This water is circulated throughout the building where it passes through piping and coils. This is generally in most cases a forced […]

Boiler Commissioning & Functional Testing – Quality Assurance

Boiler Commissioning & Functional Testing – Quality Assurance Boiler Commissioning & Functional Testing – Commissioning (Cx) any type of HVAC equipment is many different procedures from the beginning of the commissioning process to the end of the process. One of the most important procedures during the Cx process is functional testing. The functional testing always […]

How VAV Boxes Work | HVAC Zoning

How VAV Boxes Work How VAV Boxes Work? A Variable Air Volume box is typically installed in commercial buildings and provide heating and cooling for occupants. There are different types of Variable Air Volume boxes but how a Variable Air Volume box works is fundamentally the same from one Variable Air Volume box type to another. Essentially a Variable Air […]

Variable Air Volume Box with Hot Water Reheat | Commercial HVAC

Variable Air Volume Box with Hot Water Reheat Variable Air Volume Box with Hot Water Reheat – The variable air volume box or VAV box is a commercial solution to adding multiple zones to large buildings. VAV boxes offer zoning solutions so that separate zoning demands or temperature selections can be maintained in different areas of […]

Glycol Feed System for Chiller Condenser Water Loop | Antifreeze Protection

Glycol Feed System for Chiller Condenser Water Loop Glycol is like antifreeze and is used in chilled water piping loops to prevent freezing. Everyone knows when the pipes freeze they also break and start leaking. Having antifreeze in a chilled water loop is important to prevent freezing. So, how do you keep antifreeze in the […]

Actuators for Chilled Water Valve | DDC Commercial Systems

Actuators for Chilled Water Valve – These chilled water actuators control the flow rate for a chilled water system in a data center. There are various sequence of operations for chilled water systems and the sequence of operation is usually always different from one chiller plant to another chiller plant. It depends on the components in […]

Outside Air Dampers with Energy Recovery | Energy Efficiency

Outside Air Dampers with Energy Recovery The dampers straight across are outside air dampers or make-up air coming from an energy recovery unit. According to the mechanical code commercial buildings require a certain amount of fresh air from the outside to maintain good IAQ for the occupants. An energy recovery unit allows it to be conditioned before being […]

Economizer Systems and HVAC Control | Building Automation

Economizer Systems and HVAC Control Direct Digital Controls Systems in HVAC control has taken leaps and bounds in the last few years in being user friendliness, ease of designing systems, troubleshooting system problems, and increasing efficiency over the older energy management systems. When discussing increasing efficiency of systems the idea of economizing always comes up. […]

Critical Facilities and Make-up Water

Critical Facilities and Make-up Water Data Centers a categorized by tier levels and everything in the data centers infrastructure is checked and classified so that any particular data center can achieve a certain tier level based on the infrastructure in the data center. Data centers are always classified a critical facilities and need the proper […]

Air Management in Hydronic Piping Loops

Air Management in Hydronic Piping Loops This is a secondary chilled water pump in a large pump room designated for pumps and piping in a data center. After a few minor tweaks and corrections these pumps all operated flawlessly. There was very little issues with the secondary pump start-ups unlike the primary pumps where cavitation […]

About Chilled Water Systems | HVAC Hydronics

About Chilled Water Systems | HVAC Hydronics About Chilled Water Systems – Chilled water systems are mainly used in large commercial HVAC air conditioning systems and industrial cooling applications although there are some residential and light commercial HVAC chilled water systems in use. Chilled water systems are popular because they use water as a refrigerant. […]

Generators Serving Small Data Center | Critical Facilities

Generators Serving Small Data Center | Critical Facilities These generators serve a small data center giving the data center back-up emergency power in the event of a loss of utility. Most data centers have redundant power from the utility and back-up generators. In other words, the utility will provide two sources of utility power from two […]

HVAC Heating and Cooling © 2016