Codes & Standards

The 2019 edition of ASHRAE Standard 90.1 incorporates a change that significantly impacts the design of high-capacity space heating gas boilers. The standard mandates that gas boilers ranging from 1 to 10 million Btu/h) must be…

A retired engineer I know once said, "There is no glory in an undersized….”

So far in this series, we’ve discussed the relevancy of Water Source Heat Pumps (WSHPs) in terms of their low Energy Use Intensity (EUI) and high coefficient of performance (COP). However, looming refrigeration regulatory changes….

JMP has recently added a product that we believe is as effective as any we have seen, without being complicated or disruptive. The Armstrong VidaShield™ UV24 Air Purification System…

In our previous series, Introduction to Water Source Heat Pump Systems, we covered the advantages, operation, and piping design options for a system that utilizes water source heat pumps (WSHPs). Now it’s time to dig into the overall mechanical design….

Water source heat pump (WSHP) systems can be successfully and advantageously applied in a wide variety of commercial, institutional, and multi-unit residential buildings. The commonality that makes any of these potentially suitable for WSHP design is the need for simultaneous heating and cooling with individualized zone control. But WSHPs can be useful in meeting other requirements….

Waterside economizing typically involves the transfer of BTUs from an open loop cooling tower system to a closed loop chilled water system. Since these two hydronic systems must remain separate so we do not foul the chilled water systems, a heat exchanger is required to prevent mixing of the fluids, but what type of heat exchanger should you choose?

Has your state adopted ASHRAE 90.1-2010 or beyond into its commercial building code? If so, then it is highly likely that you should be incorporating either waterside or airside economizing into your cooling design. The Standard has effectively made air or waterside economizing a requirement in virtually every…

Creating a reasonable load profile is essential for calculating and then comparing lifecycle costs of specific cooling towers, including various brands and/or models within a specific brand. To do that we have to estimate the number of hours a cooling tower will operate at …

To control a variable speed pumping system, we must determine the minimum operational head of the system. Some refer to this value as constant head, minimum head, independent head, etc. Throughout this and in other JMP blogs, we refer to it as ...