A condensing economizer can increase overall heat recovery and steam system efficiency by up to 10 percent by reducing the flue gas temperature below its dew point, resulting in improved effectiveness of waste heat recovery.
1 Place pork loin into oven, turning and basting with pan liquids. 2  Cook until the pork is no longer pink in the center, about 1 hour. 3  An instant-read thermometer inserted into the center should read 145 degrees F (63 degrees C).4  Remove roast to a platter. Rub the meat with the remaining garlic mixture and olive oil. 2  Place pork loin into oven, turning and basting with pan liquids. 3  Cook until the pork is no longer pink in the center, about 1 hour. 4  An instant-read thermometer inserted into the center should read 145 degrees F (63 degrees C). 5  Remove roast to a platter.
Obviously since the two cuts are much different in size, cooking applications vary. In general the pork loin should be cooked for 20 minutes per pound in a 350* oven. I also cook 2 pounds in my slow cooker on low for 5 hours. (My slow cooker runs hot. You'll need to experiment with your brand and model). A 1-2 pound pork tenderloin can be cooked in the oven at 350* for 20 minutes total. We've also had good success grilling a tenderloin on a charcoal grill for 20 - 30 minutes. I do not suggest using a slow cooker with a pork tenderloin. The meat is much too tender and cooks too quickly.