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Last week we talked about the critical relationship between the steam condensate return temperature and proper pump NPSHR. This week we'll look at the role the discharge balance plays in assuring....
Read MoreToday’s HVAC and process engineers have lots of choices when it comes to pipe sizing programs for steam and condensate applications. Put in a load and a pressure and out pops the answer. But ever wonder about how that answer is generated? Or if there are times when it might be suitable to choose another pipe size....?
Read MoreOver the last few weeks the we’ve looked at pumping issues with multiple condensers and pumps. We have received questions about the topic, including these two:
Why do I need cooling tower outlet On-Off valves if I have an equalizing line?
Why do we see outlet On-Off valves on almost all jobs in North Carolina and only half the jobs in Michigan and Northern Ohio?
Read MoreOver the last few weeks we've looked at pumping issues with parallel equal sized condensers and pumps. This week we will look at the parallel condenser systems where the condensers are different types or sizes.
Read MoreIn Part 1 of this series we offered an example of a condenser water pumping system with 800 GPM per condenser for a total of 1600 GPM with the third condenser serving as standby. The tower elevation or lift is 10 feet, the condenser (with the 2-way valve and balance valve) has 20 feet of pressure drop, and the common piping with any safety factor has 30 feet of pressure drop. But there was a problem....
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