Welcome to ModelEngineMaker !If you have problems registering or logging in, please use the contact menu option to request assistance.
Hi, Also in an infernal combustion engine the inlet/exhaust ports are different sizes and the cams can be set differently . so .could a steam engine have four ports 2 for the inlet cycle and two (larger)? for the exhaust cycle ? My brain is really starting to hurt now.!! Is it because i am an autodidact ??................
more fascinating info and a whole new set of questions............. so in an enclosed vessel half full of air and water at sea level the water sinks to the bottom. if this vessel were taken to outer space how would the water know where to go ?? How does gravity get through the walls of the vessel ??What is the temperature of outer space and would the water be frozen ? Just wondering really...........
The temperature difference in dT is a bit more complicated. In our condenser, the steam side of the heat exchanger is essentially constant temperature while the latent heat is transferred. However if we are cooling with water, the water temperature is rising as is moved through the exchanger and takes up heat. Similar considerations if the heat transfer is between two liquids except that then both fluid temperatures are changing. It is necessary in these conditions to use a log mean temperature difference. It involves the temperature difference on each end as well as the natural logarithm of the ratio of the inlet and outlet temperature differences. I can write it out if anyone is really interested, but I don't think it will be useful for most readers.