This month, I will continue to discuss the forgotten skills of steam system design. 

When I started out at an HVAC consulting engineering firm back in the 1960s, our services were primarily focused on hospital design engineering. Back then, steam system engineering was standard for those building applications.

With variable refrigerant flow (VRF) HVAC systems growing in popularity, engineering refrigeration systems can become very intimidating to many design engineers.

We are in a new era — a time of increased realization that the indoor environment has a powerful influence on human health.

This is my third column presenting a real-life example of how trend analysis, if done thoughtfully, can uncover wasted energy even when the system appears to be functioning well.

Continuing with the theme from last month, this column presents another real-life example of how trend analysis, if done thoughtfully, can uncover wasted energy that no one even suspected.