FAN WATT DRAW TEST
In order to avoid increased energy usage due to low airflow, the Fan Wat Draw Test will allow the HERS Test Raters to verify appropriate airflow compliance.
Airflow and Fan Efficacy are two critical parts of a controlled air system that generally have been overlooked by numerous HVAC installers. The outcome being that many existing homes have ducts and hardware inappropriately.
Most producers of ducted A/C systems have designed their hardware to be its most effective when there is something like 400 CFM (Cubic Feet each Minute) of airflow per ton of A/C flowing across within the loop. 400 to 450 CFM is ideal.
Existing Duct Systems
The (CEC) California Energy Commission requires at least 300 CFM per Ton of A/C for existing or altered duct systems. That is on the grounds that the installer can’t be considered liable for ducts he neither installed nor approaches for repairs.
A system that has under 300 CFM per Ton is extremely wasteful and may prompt freezing up of coils and even compressor failure.
New Duct Systems
The (CEC) California Energy Commission requires at least 350 CFM per Ton of A/C when the duct system is “All New.” Another duct system’s compressor engine should utilize < 0.58 x CFM (estimated) airflow.
Shockingly many existing systems move only 200-300 CFM. This is one more explanation that you need HERS Test Rater for existing and new duct systems.
The Most Effective Method to Test for Fan Efficiency and Fan Watt Draw
As our gadgets and different systems have become increasingly demanding of power in generally more small and average spaces. Fans need to work hard for the supply of their force to pull heat away from the area where it can develop. In-home construction, controlled air heating is frequently used to assist with keeping the indoor temperature stable, yet the force required for the fan watt draw goes up as needs be like the fan’s performance does.
To an ever-increasing extent, with an eye on limiting energy utilization and increasing energy efficiency, fan load has become one of the focused areas. HERS Test Raters experts will not just check for airflow in ductwork by utilizing a blower test; they will also check the fan productivity. Hers Test Raters have experienced professionals who can do the job which nobody else can do.
How Fan Efficiency Works?
Fan manufacturers measure the proficiency of their equipment utilizing absolute pressure, while static effectiveness is determined by utilizing static pressure. As air travels through a system, it makes positive static pressure. Whatever other parts that restrain the movement of the airflow make negative static pressure. Various sorts of fans accordingly make various advantages of airflow to adjust the negative and the positive.
Measuring Fan Watt Draw
In case you are worried that your fan establishment is drawing an excessive amount of wattage or you need to check for consistency, contact HERS Test Raters. Our certified professionals can play out an assortment of tests to gauge the productivity and yield of your fan and HVAC system. We can likewise conduct duct airflow testing, compressor tests, and other testing and verification expected to get a building license or for other regulatory requirements.
Proposed Changes in Fan Efficiency
The California Energy Commission has proposed an adjustment of its codes and guidelines that influences single-family and multi-family buildings. This proposition lessens fan unit productivity from 0.58 watts per cubic feet each moment to 0.45 W/cfm. What’s more, it additionally considers a consistent need for problem recognition and analysis gadgets; this consistent need for FDD gadgets will be intended to help long haul and starting performance of cooling systems.
An elective choice is to check fan effectiveness through temperature split. This option, in comparison to refrigerant charge verification, can, in any case, verify the performance of the system while recognizing numerous system issues while requiring less an ideal opportunity to verify them.
