HVAC Definitions Terms & Acronyms | Heating Cooling - This is a comprehensive list of HVAC Definitions Terms & Acronyms. High Performance HVAC is certain there are more terms and acronyms. If you know of something we missed please email us. Thanks! (more…)
HVAC 3R NEMA Rated Control Panels - These control panels offer resistance to inclement weather. They house the DDC controllers for two small chillers and two air handlers. The chillers provide chilled water for air conditioning to the air handlers. (more…)
HVAC Control Transformer Bank - This bank of transformers is being used to power several VAV box controllers. One of many VAV boxes is powered by one of these transformers. In most VAV box applications, the power for the control system is at the box and a properly sized transformer for VA load is used to power the controller. In this application, the VAV boxes were not fan-powered and line voltage was not available in the boxes. So a central transformer bank was used and a wire for control power was pulled to each VAV box. (more…)
Portable Load Bank for UPS Testing | Commissioning - This is a portable load bank used for testing small UPS (Universal Power Supply) systems and for other electrical loads. New UPS systems are tested to ensure they operate properly and can hold the designed load whenever a power failure occurs.
It is a way to test the UPS system without hooking up an actual load to the system with the actual load being the computer systems the UPS will power in the event of a power failure.
This testing ensures the UPS equipment will functionally operate after the intended load is hooked up to the UPS system. Included in the test is a time factor on how long the batteries will power the load without utility or a backup generator. On specific construction projects, whether it is new construction or retrofit projects, data centers and telecom facilities go through the commissioning process.
The commissioning process tests all electrical and mechanical devices under normal operation and under full load conditions. Other scenarios are tested such as equipment failure, infrastructure failures such as piping or utility loss, and plans implemented for operational procedures in case these scenarios occur. (more…)
This is an HVAC chilled water system cooling tower fan for a large chilled water system. Four large cooling towers for two chiller plants in a data center. Data center cooling systems generally are redundant not only for emergency situations but also for maintenance. The cooling tower fan typically has vibration switches installed in the fan assembly to shut the fan off in the event of too much vibration. (more…)
Cooling Tower Evaporation Cools Water | HVAC Technical - Cooling towers use the process of evaporation to cool or removes heat from the condenser water that was transferred to the water in the chiller condenser barrel. The heat is absorbed in the load in this case in a data center on a data center floor. The servers and electrical equipment produce a massive amount of sensible heat.
The heat is absorbed by computer room air conditioners or computer room air handlers. These systems, computer room air handlers, and air conditioners have chilled water coils. The chilled water originates at the chiller into the primary loop. The water circulates through the primary loop and makes its way into the secondary loops. (more…)
Stationary Load Bank for Testing Electrical Equipment - Large data centers often need load banks for testing or exercising electrical equipment from time to time especially after maintenance procedures have taken place and the maintenance staff wants to test the system to make 100% certain the equipment will operate when the time comes for it to operate. (more…)
Data Center Perforated Tiles for Cooling Servers - There is a lot to consider with perforated tiles in data centers and depending on who you talk to you will get different answers. The server floor in a data center is typically built on a raised floor with cold air being pumped under the floor by large CRAH (Computer Room Air Handlers) or CRAC units (Computer Room Air Conditioners). (more…)
Day Tank for a Diesel Generator | Critical Facilities - This is a photo of a generator day tank for a diesel generator. The tank has floats inside that keep the fuel level automatically topped off in the tank so when the generator starts there is a fuel supply ready to go. As the generator consumes fuel the pump activates and resupplies the tank to keep the generator fueled and running. (more…)
Dust Smoke Filter Banks | Indoor Air QualityDust Smoke Filter Banks - These filter banks filter the exhaust air from a welding lab where lots of smoke, fumes and related dust ends up going through these smoke filter banks. Specialized filtering systems are commonly used in industrial areas where fumes, smoke, and dust can be hazardous to the health of people working there. (more…)
