Stirling engine micro-CHP This technology is new to the market, although the principal of the Stirling engine is well established. The electrical output is small relative to the heat output (about 6:1) but this is not necessarily a problem for micro-CHP.
Kidney damage due to a blocked artery is a rare cause of kidney pain, as is poststreptococcal glomerulonephritis, an uncommon complication of streptococcal infections, such as strep throat (bacterial throat infection) and impetigo. Some conditions that cause kidney pain can have serious complications.
Back pain could be a sign of a kidney infection. Lower back pain can be debilitating. Finding the root cause of it can be nearly as frustrating. Part of the reason is the complexity of the human muscular-skeletal system, and the fact that so many stresses from our erect posture can come home to roost in our lower backs.