Steam Basics Part 2: Steam Inlet Pipe Size of Steam-to-Water Heat Exchangers

Steam Basics Part 2: Steam Inlet Pipe Size of Steam-to-Water Heat Exchangers

Many institutional and industrial projects use steam to heat the water for hydronic heating, domestic water, or processes. The pipe size prior to the steam control valve is often shown, but the pipe size from the control valve to the steam-to-water heat exchanger or converter is rarely shown. A question we receive often is...

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Part Load Efficiency Values (PLEV) Part 5: BTUH Load Output vs. Percent of Flow Tolerance

Part Load Efficiency Values (PLEV) Part 5: BTUH Load Output vs. Percent of Flow Tolerance

We recently introduced the part load efficiency value (PLEV) aspect of the Bell & Gossett online pump selection tool. PLEV for pumps is based on flow rate while the Integrated Part Load Value (IPLV) for chillers is based on load. This final segment on PLEV will look at the difference.

Let’s begin by examining....

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Air Management and Pressurization Part 1 - The Rationale Behind Closed System Design

Closed loop systems create the need for accurate pressurization and air management in a hydronic heating and cooling system.  Unfortunately, proper air management often turns out to be an Achilles’ heel in a hydronic system’s design.  Design it wrong and a host of problems can erupt, from noisy operation to poor efficiency and shortened equipment life.  It begs the question -- why even design a system to be closed in the first place?  After all, condensate systems and cooling tower systems are

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