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12070results about "Structural/machines measurement" patented technology

System and method for evaluating changes in the efficiency of an HVAC system

The invention comprises systems and methods for evaluating changes in the operational efficiency of an HVAC system over time. The climate control system obtains temperature measurements from at least a first location conditioned by the climate system, and status of said HVAC system. One or more processors receives measurements of outside temperatures from at least one source other than said HVAC system and compares said temperature measurements from said first location with expected temperature measurements. The expected temperature measurements are based at least in part upon past temperature measurements.
Owner:ECOFACTOR

Combined vibration damper of screw drill complete machine test-bed and manufacturing method thereof

The invention discloses a combined vibration damper of a screw drill complete machine test-bed and a manufacturing method thereof. The combined vibration damper comprises a vibration attenuation base which comprises a loading system base, a first clamping system base and a second clamping system base, wherein the loading system base is arranged on an equipment foundation in a rigidity way; the first clamping system base and the second clamping system base are connected into a whole through a bolt and are arranged on the equipment foundation through a rubber vibration attenuation block; an interval of 30-50 mm is reserved between the loading system base and each clamping system base; the first clamping system base and the second clamping system base are respectively internally provided with a plurality of cubic cavities with an equal size; the volume of each cubic cavity is 0.1-0.2 cubic meter; discrete type balance weight sand is respectively filled into the cubic cavities, and the filling efficiency is 80-90 %; and the weight of the balance weight sand is 25-35 % of the total weight of the whole device. The test-bed is capable of restraining resonance and testing precisely in the testing process by the combined vibration damper, and the usage precision of surrounding working devices is not affected.
Owner:DEZHOU UNITED GASOLINEEUM MACHINERY
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