The Experts below are selected from a list of 288 Experts worldwide ranked by ideXlab platform

Andrew Eddy - One of the best experts on this subject based on the ideXlab platform.

  • Thermal performance indicators for refrigerated road vehicles
    International Journal of Refrigeration-revue Internationale Du Froid, 2006
    Co-Authors: Silvia Estrada-flores, Andrew Eddy
    Abstract:

    An experimental evaluation of insulation effectiveness, pull-down times and effectiveness of a mechanical refrigeration unit was performed on five refrigerated panel vans. Additionally, a mapping of temperature variability in the Cargo Space was carried out during a simulated journey encompassing several door openings. The temperature variability measured in the vans was neither correlated to the effectiveness of the insulation nor the time required to achieve complete cooling of the Cargo Space. These criteria are common thermal performance indicators used to evaluate refrigerated vehicles in international standards. The efficiency of insulation was correlated to the pull-down times, presenting the possibility of calculating the former as a function of the latter. The temperature variability was correlated with the time required for the unit to recover temperature control after a door opening and the difference between the maximum and minimum temperatures reached during a door opening cycle.

  • Thermal performance indicators for refrigerated road vehicles
    International Journal of Refrigeration, 2006
    Co-Authors: Silvia Estrada-flores, Andrew Eddy
    Abstract:

    An experimental evaluation of insulation effectiveness, pull-down times and effectiveness of a mechanical refrigeration unit was performed on five refrigerated panel vans. Additionally, a mapping of temperature variability in the Cargo Space was carried out during a simulated journey encompassing several door openings. The temperature variability measured in the vans was neither correlated to the effectiveness of the insulation nor the time required to achieve complete cooling of the Cargo Space. These criteria are common thermal performance indicators used to evaluate refrigerated vehicles in international standards. The efficiency of insulation was correlated to the pull-down times, presenting the possibility of calculating the former as a function of the latter. The temperature variability was correlated with the time required for the unit to recover temperature control after a door opening and the difference between the maximum and minimum temperatures reached during a door opening cycle. © 2006 Elsevier Ltd and IIR.

Silvia Estrada-flores - One of the best experts on this subject based on the ideXlab platform.

  • Thermal performance indicators for refrigerated road vehicles
    International Journal of Refrigeration-revue Internationale Du Froid, 2006
    Co-Authors: Silvia Estrada-flores, Andrew Eddy
    Abstract:

    An experimental evaluation of insulation effectiveness, pull-down times and effectiveness of a mechanical refrigeration unit was performed on five refrigerated panel vans. Additionally, a mapping of temperature variability in the Cargo Space was carried out during a simulated journey encompassing several door openings. The temperature variability measured in the vans was neither correlated to the effectiveness of the insulation nor the time required to achieve complete cooling of the Cargo Space. These criteria are common thermal performance indicators used to evaluate refrigerated vehicles in international standards. The efficiency of insulation was correlated to the pull-down times, presenting the possibility of calculating the former as a function of the latter. The temperature variability was correlated with the time required for the unit to recover temperature control after a door opening and the difference between the maximum and minimum temperatures reached during a door opening cycle.

  • Thermal performance indicators for refrigerated road vehicles
    International Journal of Refrigeration, 2006
    Co-Authors: Silvia Estrada-flores, Andrew Eddy
    Abstract:

    An experimental evaluation of insulation effectiveness, pull-down times and effectiveness of a mechanical refrigeration unit was performed on five refrigerated panel vans. Additionally, a mapping of temperature variability in the Cargo Space was carried out during a simulated journey encompassing several door openings. The temperature variability measured in the vans was neither correlated to the effectiveness of the insulation nor the time required to achieve complete cooling of the Cargo Space. These criteria are common thermal performance indicators used to evaluate refrigerated vehicles in international standards. The efficiency of insulation was correlated to the pull-down times, presenting the possibility of calculating the former as a function of the latter. The temperature variability was correlated with the time required for the unit to recover temperature control after a door opening and the difference between the maximum and minimum temperatures reached during a door opening cycle. © 2006 Elsevier Ltd and IIR.

Troy-chi Chiu - One of the best experts on this subject based on the ideXlab platform.

  • Sensor Integrated Antenna Design for Applications in Cold Chain Logistic Services
    IEEE Transactions on Antennas and Propagation, 2015
    Co-Authors: Wen-jiao Liao, Huai-sheng Wang, Tsung-wei Lien, Chin-chung Nien, Chang-fa Yang, Bo-ren Hsiao, Jenn-hwan Tarng, Troy-chi Chiu
    Abstract:

    A planar antenna design is developed for integration with a temperature sensor to monitor frozen goods condition during transportation. Antenna geometries as well as radiation patterns are configured to address the distinctive propagation environment, which is the Cargo Space filled with stacks of thermal insulated boxes. The sensor, a Bluetooth module, periodically relays temperature data to a dedicated reader or the driver's smart phone. With these data, quality of service can be ensured for cold chain logistics. The sensor antenna, which is mounted on the surface of the insulated box, has a sideways pattern that is aimed to propagate along the gap between boxes and avoid attenuation from perishable goods within. Numerical simulations of this distinctive propagation environment are conducted to determine the required antenna polarization. To demonstrate advantages of the proposed temperature monitoring system, several field tests have been devised. Received signal strength indicators are measured for stacked containers in both closed and open truck environments to validate the superior performance of the developed sensor. Stable connections to sensors on boxes filled with frozen goods can be made successfully in delivery trucks.

Wen-jiao Liao - One of the best experts on this subject based on the ideXlab platform.

  • Sensor Integrated Antenna Design for Applications in Cold Chain Logistic Services
    IEEE Transactions on Antennas and Propagation, 2015
    Co-Authors: Wen-jiao Liao, Huai-sheng Wang, Tsung-wei Lien, Chin-chung Nien, Chang-fa Yang, Bo-ren Hsiao, Jenn-hwan Tarng, Troy-chi Chiu
    Abstract:

    A planar antenna design is developed for integration with a temperature sensor to monitor frozen goods condition during transportation. Antenna geometries as well as radiation patterns are configured to address the distinctive propagation environment, which is the Cargo Space filled with stacks of thermal insulated boxes. The sensor, a Bluetooth module, periodically relays temperature data to a dedicated reader or the driver's smart phone. With these data, quality of service can be ensured for cold chain logistics. The sensor antenna, which is mounted on the surface of the insulated box, has a sideways pattern that is aimed to propagate along the gap between boxes and avoid attenuation from perishable goods within. Numerical simulations of this distinctive propagation environment are conducted to determine the required antenna polarization. To demonstrate advantages of the proposed temperature monitoring system, several field tests have been devised. Received signal strength indicators are measured for stacked containers in both closed and open truck environments to validate the superior performance of the developed sensor. Stable connections to sensors on boxes filled with frozen goods can be made successfully in delivery trucks.

  • Sensor-integrated low-profile antenna design for multipath and blockage rich propagation environment
    2013 IEEE International RF and Microwave Conference (RFM), 2013
    Co-Authors: Huai-sheng Wang, Chen-hao Hsu, Tsung-wei Lien, Chang-fa Yang, Wen-jiao Liao, Chin-chung Nien
    Abstract:

    Due to the growing demand for business-to-customer delivery on perishable goods, a novel business model has been devised to send temperature sensitive goods to the general public without refrigerated trucks. Packages are placed in thermal insulated containers instead, while the temperature is constantly monitored by wireless sensors. Because the Cargo Space is full of lossy materials, the sensor-integrated antenna is designed to provide radiations in a waveguide-like propagation environment. A low-profile dipole antenna configuration is adopted. Simulation and measurement results demonstrate the proposed conformal antenna can provide the required radiation patterns with decent gains and efficiencies.

Chin-chung Nien - One of the best experts on this subject based on the ideXlab platform.

  • Sensor Integrated Antenna Design for Applications in Cold Chain Logistic Services
    IEEE Transactions on Antennas and Propagation, 2015
    Co-Authors: Wen-jiao Liao, Huai-sheng Wang, Tsung-wei Lien, Chin-chung Nien, Chang-fa Yang, Bo-ren Hsiao, Jenn-hwan Tarng, Troy-chi Chiu
    Abstract:

    A planar antenna design is developed for integration with a temperature sensor to monitor frozen goods condition during transportation. Antenna geometries as well as radiation patterns are configured to address the distinctive propagation environment, which is the Cargo Space filled with stacks of thermal insulated boxes. The sensor, a Bluetooth module, periodically relays temperature data to a dedicated reader or the driver's smart phone. With these data, quality of service can be ensured for cold chain logistics. The sensor antenna, which is mounted on the surface of the insulated box, has a sideways pattern that is aimed to propagate along the gap between boxes and avoid attenuation from perishable goods within. Numerical simulations of this distinctive propagation environment are conducted to determine the required antenna polarization. To demonstrate advantages of the proposed temperature monitoring system, several field tests have been devised. Received signal strength indicators are measured for stacked containers in both closed and open truck environments to validate the superior performance of the developed sensor. Stable connections to sensors on boxes filled with frozen goods can be made successfully in delivery trucks.

  • Sensor-integrated low-profile antenna design for multipath and blockage rich propagation environment
    2013 IEEE International RF and Microwave Conference (RFM), 2013
    Co-Authors: Huai-sheng Wang, Chen-hao Hsu, Tsung-wei Lien, Chang-fa Yang, Wen-jiao Liao, Chin-chung Nien
    Abstract:

    Due to the growing demand for business-to-customer delivery on perishable goods, a novel business model has been devised to send temperature sensitive goods to the general public without refrigerated trucks. Packages are placed in thermal insulated containers instead, while the temperature is constantly monitored by wireless sensors. Because the Cargo Space is full of lossy materials, the sensor-integrated antenna is designed to provide radiations in a waveguide-like propagation environment. A low-profile dipole antenna configuration is adopted. Simulation and measurement results demonstrate the proposed conformal antenna can provide the required radiation patterns with decent gains and efficiencies.