Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 17 of 17 for “"outdoor temperature"”.
-
Blood pressure variation and its association with outdoor temperature among adults with hypertension in a primary care setting in South Africa
… Africa. We investigate the relationship between outdoor temperature and blood pressure in a primary care setting with limited control of indoor climate in Cape Town, South Africa. Method – The study uses blood pressure data from 2494 participants screened and enrolled for entry in the SMS-text …
-
Equivalent Deterministic and Stochastic Models for Periodic Time Series
… exhibit a recurrent pattern every S time units. Outdoor temperature, electrical consumption, the roughness of machined surfaces, and machine tool chatter vibration are a few examples. This periodic behavior is caused by the dynamics of the underlying physical systems that give rise to the time …
-
Optimal Design and Operation of A Hybrid Gas/Electric Chilled Water Plant
… schedules, the cooling load profile, and the outdoor temperature profile. Internal factors may include the chiller performance characteristics, initial and maintenance costs, and the chiller(s) operating strategy. A mathematical model representing the chilled water plant design problem is …
-
An economic study of a proposed 5000 kw three stage extraction condensing turbo-generator unit in the Virginia Polytechnic Institute heating and power plant
… were used in the investigation. The average outdoor temperature days were grouped in 5°F increments from 20°F through 70°F. A set of four daily load curves was plotted for each 5°F increment. Curve No. 1 shows the total electric load on the system. Curve No. 2 shows the steam demand on the …
-
Temperature control strategies for radiant floor heating systems
… different control strategies for improving the temperature regulation in RFH systems are proposed. These are: a multistage on-off control, an augmented constant gain control (ACGC) and a variable gain control (VGC). Simulation results show that the multistage control maintains zone air …
-
Recommendations for the analysis and design of naturally ventilated buildings in urban areas
… These methods can be used to estimate indoor-outdoor temperature differences and air ow rates for several opening geometries. Our hope is for these methods to offer a good overview of how natural ventilation calculations can be applied to urban areas and to help resolve some of the main …
-
Air - for Health and Comfort, An Analysis of HVAC Systems' Performance in Theory and Practice
… and exhausting designed air flow in different outdoor and indoor conditions. The other part is to analyze the design criterias and the energy use of a variable air volume system based on controlled static pressure at the branch duct level and supplying outdoor air only. To investigate the …
-
Soft Sensing-Driven CO<sub>2</sub> Predictive Models in Educational Buildings
… Absolute Error (MAE) of 37.57 by utilizing room temperature, outdoor temperature, and the hour of the day. Moreover, this study assesses the transferability of the predictive models trained on a limited number of data points. We observed that using occupancy percentage results in more …
-
Energy conservation and thermal comfort in buildings in northern Pakistan
… baseline energy consumption, recorded indoor and outdoor temperature data for three homes and two schools were analyzed. These data were used with a steady state energy model to assess and compare energy consumption of a traditional and a modem home and assess energy conservation measures and …
-
A methodology for thermal analysis and predictive control of building envelope heating systems
… loads and operating costs and to reduce room temperature swings by predictive control while utilizing solar gains to reduce energy consumption. Nevertheless, techniques required for the predictive control of BEHSs need to be developed in order to materialize these potential benefits. A …
-
A Data-driven Approach for Coordinating Air Conditioning Units in Buildings during Demand Response Events
… thermal model was designed to predict the indoor temperature of thermal zones under different AC control signals. The model was trained with supervised learning using coarse-grained temperature data recorded by smart thermostats; thus, it requires no lengthy configuration as a forward model does. …
-
Towards the reformation of Abu Dhabi to be an environmentally sustainable city
… carbon dioxide emissions, indoor and outdoor temperature, indoor and outdoor relative humidity, and levels of indoor carbon dioxide. Monitors were installed in the three prototype buildings for a period of time, and the results of the readings were compared and analysed. In addition, a …
-
Modelling broiler chicken health and welfare in a changing climate
… infection) were examined in relation to outdoor temperature throughout broilers’ lifespan by means of time-series regression; a statistical approach rarely utilised in animal welfare science. A distributed lag non-linear model defined the U-shaped relationship between daily mean …
-
Aggregator-Assisted Residential Participation in Demand Response Program
… can vary significantly based on season, ambient temperature, time of the day etc. High demand can result in very high wholesale price of electricity. The reason for this is very short operating duration of peaking power plants which require large capital investments to establish. Those power …
-
Influence of occupant's behaviour on indoor environmental quality and energy consumptions
… is based on measurements of both indoor and outdoor environmental parameters and the behavioural actions of the building occupants (window opening, TRV’s set point adjustments, occupancy sensors, etc..). From the collected data, different suitable user behavioural patterns (models) were …
-
Dynamic system modeling and decision support for grow-finish swine barn operation
… same breeding line of swine but different indoor temperatures. The calibration results of the MSPGM demonstrate that swine in the experiment grow leaner, consume more feed, have higher maximum protein deposition rate, and utilize energy more efficiently to deposit body lipid and protein, as …
-
Understanding Thermal Conditions, Thermal Comfort and Adaptive Behaviours in Naturally Ventilated Multi-patient Wards in Connaught Hospital, Freetown, Sierra Leone
… the ranges of neutral, comfortable and preferred temperatures, relative humidity values and airflows and the thermal adaptive capacity among nurses, patients and visitors; d) to assess the impact of seasonal, temporal, spatial and environmental conditions and personal factors on thermal comfort …