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 pain is caused by infection, inflammation, injury or enlargement of the kidney, or by conditions that block the flow of urine out of the kidney. Pyelonephritis (kidney infection) and kidney stones are the most common causes of kidney pain. Pyelonephritis is often accompanied by other symptoms of urinary tract infection, such as burning with urination, frequent or urgent need to urinate, bloody urine, fever, and nausea with or without vomiting.
Method 2 of 2: Knowing What Causes Kidney Pain. 1. See a doctor if you think you may have kidney infection or pyelonephritis. Kidney infection begins as a urinary tract infection and progresses to your kidneys. It can cause permanent damage to the kidneys if itâs not treated promptly.One or both kidneys may be infected, causing a deep, dull pain in the abdomen, back, side, or groin.ethod 2 of 2: Knowing What Causes Kidney Pain. 1. See a doctor if you think you may have kidney infection or pyelonephritis. Kidney infection begins as a urinary tract infection and progresses to your kidneys. It can cause permanent damage to the kidneys if itâs not treated promptly.