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.
How long does it take to cook a four-pound pork loin? Bone-in pork loin may be roasted at 350 degrees Fahrenheit for 25 to 40 minutes per pound (100 to 160 minutes for a 4-pound loin), while a boneless loin should be roasted for 20 to 25 minutes per pound (80 to 100 minutes for a 4-pound loin).