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commercial pump water heater
commercial pump water heater

Heat Pump Water Heaters: Hot Water Recirculation (Part 6)

Norm Hall September 12, 2022Water Heaters, Plumbing System Design, Electric, Heat Pump Water Heaters, Heat Pump Water Heaters, Monday Morning Minutes

How does the commercial heat pump water heater, using the preferred R-744 refrigerant, handle the domestic hot water recirculation load? The R-744 (carbon dioxide) heat …

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HydronicsNorm Hallhydronic systemsDomestic Hot Water Recirculation SystemsWater Heaters

Hot Water Heater Decarbonization: Using Condenser Water to Pre-Heat the Incoming Cold-Water

Norm Hall June 13, 2022Water Heaters, Plumbing System Design, Heating, Monday Morning Minutes

Decarbonization does not always automatically become electrification. The enterprising engineer will first look at diverse ways to reduce the carbon use. Here is an example …

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CondensingWater HeatersHydronicsNorm HallBell and GossettHeat Exchangers
bryan bh boiler
bryan bh boiler

Top 10 Things You Should Know About Commercial Electric Boilers (Part 2)

Norm Hall June 6, 2022Boilers, Electrical, Monday Morning Minutes

Welcome back to Part Two of our top 10 things to know about commercial electric boilers. As mentioned last week, HVAC and Plumbing Engineers are …

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BoilersHydronicsNorm Hallhydronic systemsHVAC Hydronic Systemhydronic systemHVAC Systems
bryan bh boiler
bryan bh boiler

Top 10 Things You Should Know About Commercial Electric Boilers (Part 1)

Norm Hall May 30, 2022Boilers, Condensing, Operation, Monday Morning Minutes

HVAC and Plumbing Engineers are discussing more decarbonization and electrification of systems with their clients. The use of electric boilers vs. gas fired condensing boilers …

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BoilersCondensingHydronicsNorm Hallhydronic systemsHVAC Hydronic Systemhydronic system
lightbulb
lightbulb

Carbon Reduction is the Dream. Here’s How to Make it a Good One.

Norm Hall May 23, 2022Plumbing System Design, Hydronic Design, Decarbonzation, Decarbonization

Carbon reduction in building design is critical to the lifestyle of our future generations. Most engineers and their owner clients understand the concerns and welcome …

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HydronicsPumpsNorm Hallhydronic systemsdecarbonization
boiler
boiler

What is a Flexible Tube Condensing Boiler? Why My Client May Want It

Norm Hall May 16, 2022Monday Morning Minutes, Boilers, Condensing, Selection and Specification

Heating and cooling service contractors take the brunt of complaints over the high cost of condensing boiler repairs. A high efficiency condensing boiler heat exchanger …

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BoilersCondensingHydronicsNorm Hallhydronic systems
scientist vs engineer
scientist vs engineer

Circulator Pump Curves & Step Sized Selections. A Domestic Water Recirculation Example

Norm Hall May 9, 2022Pumps, Speed, Monday Morning Minutes

Circulator series pumps are those small inline pumps that have fixed impeller choices with no impeller trimming available. When these pumps have ECM technology, the …

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BoilersHydronicsNorm HallBell and Gossettpumps

Primary-Secondary Variable Heating Systems: Should I Pump Into the Boiler or away from It?

Norm Hall April 25, 2022Boilers, Hydronic Design, Primary Secondary Piping, Primary Variable, Monday Morning Minutes

Previously, the R. L. Deppmann Monday Morning Minutes looked at pump location in a primary-variable boiler heating system. We made a very definitive statement about …

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primary-secondary pipingBoilersHydronicsPumpsvariable speedhydronic systems
confused boiler problem
confused boiler problem

Primary Variable Heating Systems: Should I Pump Into the Boiler or Out of It?

Norm Hall April 11, 2022Hydronic Design, Primary Variable, Expansion and Compression Tanks, Expansion and Compression Tanks, Boilers, Pumps, Monday Morning Minutes, Tanks

We recently received several calls for our recommendation on whether to pump into the boiler or out of the boiler in a primary variable heating …

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BoilersHydronicsNorm HallBell and GossettExpansion Tankspumpsvariable speedhydronic systems

Minimum Flow in a Variable Speed Pump: A Great Example

Norm Hall March 14, 2022Monday Morning Minutes, Pumps, Cooling Towers, Hydronic Design

What is the minimum flow rate a variable speed pump can provide without damage to the pump? This is a question every engineer should ask …

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HydronicsNorm HallCooling Towerspumpshydronic systems
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  • Products
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