The author reflects on a recent trip to South America and Antarctica and discusses the topic of identifying back-feed potentials within domestic hot water risers, drawing from an article by Miles Ryan, PE, about typical issues found in high-rise residential buildings.
PM Engineer Chief Editor Nicole Krawcke had the chance to speak with several key industry stakeholders about trends and technological developments in the market, including: Greg Nahrgang, vice president, technical services and product development, Charlotte Pipe and Foundry; Adam Botts, product manager for Viega; and Steven Dolejsi, applications engineering manager, IPEX.
The 20 products highlighted here have earned the distinction of being PM Engineer’s Top Products of 2023 based on the number of pageviews on www.pmengineer.com. Congratulations to those products on this year’s list.
AJ Rose Manufacturing is a 100-year-old company in Cleveland that suffered a fire in March 2023, causing damage to a cooling tower. Pro Service Plumbing was brought in to install a new cooling tower and used 1-1/2" Viega ProPress Manual Balancing Valves for the cooling supply.
CircuitSolver thermostatic self-actuating balancing valves automatically and continuously adjust the flow of domestic hot water recirculation systems to maintain a specified temperature at the end of each branch or riser.
System COP is a more relevant metric of geothermal heat pump performance since the owner is paying for the electrical energy to operate the heat pump and the circulator, and their operation is always simultaneous.
The goal is to keep the system COP as high a possible as the operating conditions of the heat pump change. The logic behind maximum COP tracking is to continually look for an earth loop flow rate that improves the system COP.