![]() High pressure condensate can flash to steam in low pressure condensate systems causing problems with their operation and wasting steam. Be sure that high and low pressure systems are not interconnected at any location, even on condensate systems. In facilities with high and low steam operating pressure systems, all steam and condensate lines should be properly identified and checked. High and Low Pressure Systems Interconnected Valves fail due to wear, corrosion and dirt/contaminates stuck in the valve seat. As in the picture, steam still blows past the valve, but since its inside of pipe, it’s not obvious. However, often valves are installed with pipe on the down-stream side. This valve is obviously stuck partly open. If it were installed upright, it would block flow in the wrong direction. However, it is probably a good thing that it is upside down, as it is also installed backwards. It is impossible for this check valve to function when installed this way. In this example, a mechanical check valve that requires gravity to operate properly is installed upside down. It is common to find many types of steam system components installed incorrectly. When steam traps are improperly installed, they cannot function properly and therefore either do not remove the condensate, let steam blow through, or both. When it is horizontal as in this installation, the float is not a float but a pendulum (See the sectional illustration to the right). ![]() It must be installed so that the bolted-on flat plate is in a vertical position. This trap is a ‘Float and Thermostatic type. What is not so obvious to the untrained eye, is that this trap is installed wrong. It is clear from the picture that this trap has been here a long time. These are real facilities that in many cases were in improper operation for a number of years prior to the audit. The following examples are common problems discovered in the course of steam system audits by Duane Hagen of Merlo Steam (see links below). If a facility has not had a thorough review of its steam distribution system by a competent expert, then there are likely many things that an audit would reveal. Some problems lead to premature failure of equipment, but it may not be obvious what the cause of the failure was. Problems with steam systems are not always obvious as equipment may continue to function, although impaired. All of these factors and more are reasons to expect that steam piping systems could be improved when the objective is better function and energy efficiency. Systems are often modified over the years equipment, pipes and valves are moved so that they no longer perform in the way they were originally intended. Systems may have not been installed according to design because of some problem in the field – either something didn’t fit, got changed or an installer thought they had a better idea. In many cases steam systems were designed long before there was any concern about energy efficiency. Ynglet is definitely worth the download and carving out a small chunk of time to see in action.Just because it’s ‘been that way’ for a long time, don’t assume it’s right. For a more in-depth look here’s a preview from last year’s PAX East, but why read when you can play? Head over to Steam ( or itch.io) and check out the prologue with your own hands and eyes. It makes for a unique game with a distinctive look that can be played by just about anybody, if they don’t mind poking around in the menus to fine-tune the challenge. There are a good number of difficulty settings available so you can adjust the challenge as you see fit, and the entire game is drawn in a style that brings to mind the linework of a felt-tip pen. Ynglet: Prologue was released today on Steam and it’s two fully-playable levels of a platformer that can be as challenging as it is artistic. Letting everyone remain scattered would be downright inhospitable, so the jellyfish heads out to bring everyone back together. Ynglet is the story of a jellyfish-like creature who was hanging out with its vaguely-amoebal friends watching tv (which weirdly enough featured humans on the shows they’re watching) when an asteroid struck, sending its guests flying. All those platforms seem to have gotten to be a bit much, though, because the latest one does away with them altogether, replacing them with floating safe zones in a game that feels a bit like playing in a petri dish turned on its side. Developer Nifflas has made his own fair share of them too, most notably the Knytt series. ![]() One of the constant features of a platformer is, as the name implies, platforms.
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