Abstract: There is provided a hybrid type heating system capable of heating air and water together. As an embodiment, the present invention provides a technology of carrying out heating not using a battery in an electric vehicle, a technology of heating a battery so that performance of the battery does not decrease under a low outdoor temperature condition, and a technology of carrying out heating with not decreasing driving distance of the electric vehicle or increasing the driving distance of the electric vehicle.

Abstract: There is provided a hybrid type heating system capable of heating air and water together. As an embodiment, the present invention provides a technology of carrying out heating not using a battery in an electric vehicle, a technology of heating a battery so that performance of the battery does not decrease under a low outdoor temperature condition, and a technology of carrying out heating with not decreasing driving distance of the electric vehicle or increasing the driving distance of the electric vehicle.

Abstract: A device and method for measuring dynamic thermal conductivity of micro-structure fluid. The device includes an upper fixing plate (110a) and a lower fixing plate (110b) which are vertically spaced apart from each other, a lower body (150b) which defines a side surface of a separation space formed between the upper fixing plate and the lower fixing plate, a rotating plate (120) which is disposed in the separation space in such a way that gaps are respectively formed among the rotating plate and the upper and lower fixing plates, a shaft (140) which passes through the upper fixing plate and is coupled to the rotating plate, a heater which installed on an upper portion of the upper fixing plate, and thermocouples (118a) and (118b) which are respectively installed in the upper and lower fixing plates.

Abstract: A device and method for measuring dynamic thermal conductivity of micro-structure fluid. The device includes an upper fixing plate (110a) and a lower fixing plate (110b) which are vertically spaced apart from each other, a lower body (150b) which defines a side surface of a separation space formed between the upper fixing plate and the lower fixing plate, a rotating plate (120) which is disposed in the separation space in such a way that gaps are respectively formed among the rotating plate and the upper and lower fixing plates, a shaft (140) which passes through the upper fixing plate and is coupled to the rotating plate, a heater which installed on an upper portion of the upper fixing plate, and thermocouples (118a) and (118b) which are respectively installed in the upper and lower fixing plates.

Abstract: Disclosed herein is a flash tank of a two-stage compression heat pump system that can perform cooling and heating with a separate type intercooler and a high-stage compressor protecting device. The system comprises a fluid-level detecting sensor for detecting the fluid-level of the refrigerant, an alarm sensor for notifying the saturated state of the refrigerant filled in the flash tank, an evaporator pressure sensor for measuring and notifying the pressure of the refrigerant flowing into the evaporator, a condenser pressure sensor for measuring and notifying the pressure of the refrigerant flowing out of the condenser, a flash tank fluid-level controller for receiving signals from the above sensors and controlling intermediate pressure and the fluid-level of the flash tank, and a bypass valve controller for controlling a bypass valve that receives signals from the alarm sensor and allowing a refrigerant to directly flow from the low-stage compressor to the high-stage compressor.

Abstract: A card-type signal power detection device which has a low-noise amplification function therein and is capable of receiving a low-power signal and detecting the power of the received signal, and a frequency analysis apparatus which is capable of analyzing the frequency of the received signal under the condition that the card-type signal power detection device is mounted to a portable terminal device.

Abstract: A card-type signal power detection device which has a low-noise amplification function therein and is capable of receiving a low-power signal and detecting the power of the received signal, and a frequency analysis apparatus which is capable of analyzing the frequency of the received signal under the condition that the card-type signal power detection device is mounted to a portable terminal device.