Printable Thermochromic Hydrogel‐Based Smart Window for …
Printable Thermochromic Hydrogel-Based Smart Window for All-Weather Building Temperature Regulation in Diverse Climates (Adv. Mater. 20/2023) ... The hydrogel smart windows spontaneously transform from transparent to opaque upon temperature changes. The outdoor solar radiation in summer and indoor thermal radiation in winter are both …
The hydrogel smart windows spontaneously transform from transparent to opaque upon temperature changes. The outdoor solar radiation in summer and indoor thermal radiation in winter are both …
Use this component to adjust an existing Mean Radiant Temperature for shortwave solar radiation. This adjusted mean radiant temperature can then be used in comfort studies. Note that this component assumes that you have already accounted for longwave radiation in the form of the _baseTemperature input. If you do not hook up a _baseTemperature, …
Outdoor adaptive temperature control based on a thermochromic …
Temperature regulation based on cooling and heating accounts for global energy consumption and global greenhouse gas emissions. In this work, a strategy based on a …
Bilateral passive thermal management for dynamical temperature regulation
Below the critical temperature (T emitter < T c), the surface functions in solar heating mode, while above the critical temperature (T emitter > T c), it operates in radiative cooling mode. This enables dynamic passive thermal regulation during winter conditions, while static passive radiative cooling surfaces are essential for energy ...
Multifunctional device integrating dual-temperature regulator for ...
Multifunctional device integrating dual-temperature regulator for outdoor personal thermal comfort and triboelectric nanogenerator for self-powered human-machine interaction ... human survive with reliance on various types of energy resource such as solar, wind, ocean,hydrogen and tidal energy, as well as the energy-efficient applying ...
Performance of Hong Kong''s common trees species for outdoor temperature ...
For UTS, in 2018, Morakinyo et al. studied Hong Kong''s common UTS for outdoor temperature regulation, ... Environmental meteorological data, including temperature, solar radiation, and wind speed ...
Outdoor adaptive temperature control based on a ...
In this work, a strategy based on a high emittance polymer, thermochromic hydrogel, and black solar absorber was proposed to passively control temperature by …
Outdoor adaptive temperature control based on a thermochromic …
How to achieve switchable solar heating and radiative cooling for adaptive temperature control is essential to outdoor thermal management for energy saving. In this work, the outdoor adaptive temperature control based on a high emittance polymer, …
Reducing temperature swing of space objects with temperature …
Introduction. Temperature maintenance and regulation are vital to spacecrafts and astronauts due to the extremely hostile environments in space. 1, 2 The temperature of a space object can easily change by many hundreds of degrees (−220°C to +220°C) depending primarily on solar irradiance received by and heat radiated from the …
Thermally Responsive Hydrogels for Passive Temperature …
Herein a passive thermal regulation system that features a temperature-dependent switchable solar reflectance from 0.05 (low temperature) to 0.8 (high …
Evaluation of a multi-nodal thermal regulation model for assessment …
Both the on-site data (Fig. 9 (c)) and the simulated data (Fig. 9 (d)) show that when the operative temperature was in the range of 26 °C to 30 °C, which was around the neutral state operative temperature (27 °C) in the outdoor environment, the subjects were less sensitive to solar radiation. The allowable change in mean radiant …
Thermally Responsive Hydrogels for Passive Temperature Regulation …
However, existing daytime radiative cooling systems generally lack the ability to adaptively switch between heating and cooling states based on ambient conditions. Herein a passive thermal regulation system that features a temperature-dependent switchable solar reflectance from 0.05 (low temperature) to 0.8 (high temperature) is …
Pond heat and temperature regulation (PHATR): Modeling temperature …
The energy balance model pond heat and temperature regulation (PHATR) is a computer program designed specifically for this purpose. ... equation which describes changes in internal energy for fully mixed outdoor earthen aquaculture ponds. d E d t pond = q solar ... 2015), and the energy flows have also been modelled to improve …
All-weather thermochromic windows for synchronous solar and …
Realizing smart indoor temperature regulation without HVAC (heating, ventilation and air-conditioning) systems is preferred for achieving building carbon …
the high-temperature condition (Fig. 1A). We also optimized the solar absorptance at ~0.25 (solar reflectance = 0.75) for all-season en-ergy saving in major US cities (fig. S7). Our TARC demonstrates effective surface tem-perature modulation in an outdoor test environment. We performed extensive sim-ulations based on the device …
Outdoor adaptive temperature control based on a thermochromic …
The ability to achieve dual‐mode thermal regulation for switchable heating and cooling on a single platform has thus far been challenged by the availability of …
High-transmittance pNIPAm gel smart windows with lower …
Herein, a solution for simultaneously regulating the surface tension of the scattering center and the capturing-releasing capacity of pNIPAm for water is implemented, successfully carrying out the enhancement of solar regulation and the reduction of response temperature. The maximum solar shielding and regulation of the modified …
Constructing a New Biomass-Based Bistatic Window for Solar Regulation
Smart windows effectively respond to the ever-changing climatic conditions, offering a smart solution for low-carbon buildings. However, current smart windows derived from chromic materials often have inferior solar modulation ability, or showcase high haze that obstructs outdoor views. Here, instea …
Intelligent Regulation of Temperature and Humidity in Vegetable ...
In order to meet the demands of autonomy and control optimization in solar greenhouse control systems, this paper developed an intelligent temperature and humidity control system for greenhouses based on the Single Neuron Proportional Integral Derivative (SNPID) algorithm. The system is centered around the Huada HC32F460 …
A self-adaptive film for passive radiative cooling and solar heating ...
Outdoor tests demonstrated that the PVDF@PNIPAm film self-adaptively realizes highly efficient sub-ambient radiative cooling of 1.8–3.7 °C during hot daytime and above-ambient solar heating of 4.3–5.8 °C during cold daytime (ΔT cooling–heating = ∼9.5 °C), which is favorable for cooling/heating applications in different geographic ...
Sunlight perception and outdoor thermal comfort in college
Similarly, in winter, the outdoor neutral temperature of group A was 22.39 °C, that of group B was 20.09 °C, and that of group C was 18.61 °C, indicating that the crowd''s demand for outdoor ...
Evaluation of a multi-nodal thermal regulation model for assessment …
Evaluation of a multi-nodal thermal regulation model for assessment of outdoor thermal comfort: Sensitivity to wind speed and solar radiation. Author links open overlay panel Yongxin Xie a, ... (solar radiation, wind speed, air temperature, and humidity) [16]. The models developed based on this approach are called the empirical models [7]. …
Constructing a New Biomass‐Based Bistatic Window for Solar Regulation ...
Temperature of fluid will affect its viscosity, and thereby affect the transparency switching process. ... The outdoor solar radiation levels of the two experimental days were recorded (Figure S11, Supporting Information). ... In this study, a novel RB window was designed for solar regulation of windows, meanwhile, ...
1. Introduction. Fixed windows in traditional buildings present numerous issues, including poor thermal insulation, inadequate lighting, and manual inconvenience [1].As a result, indoor temperature regulation becomes challenging, and significant energy wastage occurs [2].The research focus in the field of building technology has shifted …
Solar Adjusted MRT: solarAdjustedMRT: The estimated solar adjusted mean radiant temperature for each hour of the analysis period. This is essentially the change in mean radiant temperature above added to the hourly _baseTemperature input. This is in degreed Celcius and can be plugged into any comfort components for comfort studies. Goo-----
Performance of Hong Kong''s common trees species for outdoor temperature ...
Derived from the Munich Energy Model for Individuals (MEMI) [66], it is defined as the air temperature at which, in a typical indoor setting (without wind and solar radiation), the heat budget of the human body is balanced with the same core and skin temperature as under the complex outdoor conditions to be assessed [66, 67]. The …
Fast prediction model of three-dimensional temperature field of ...
According to the setting of boundary conditions, the supply-air temperature for heating was 294.95 K, and the outdoor air temperature was 269.65 K. On the basis of considering solar radiation, it indicates that the theoretical maximum of T 0 would be the supply-air temperature plus the heat of solar radiation, which was 298.22 …
All-weather thermochromic windows for synchronous solar …
thermal regulation of 40% and a solar regulation of 9.3% (17). Hydrogel is another promising material for smart windows (2018). – It has high solar transmittance at low temperatures because of the index matching between the polymer and water. Beyond a critical temperature, the phase separation of hydrogel generates strong
Constructing a New Biomass‐Based Bistatic Window for Solar …
To further improve the energy-efficiency of windows in varying climatic conditions, it is crucial to regulate the solar transmittance. Dynamic smart windows …
Development of a multi-nodal thermal regulation and comfort model …
Many cities worldwide have broken their hottest temperature records in the summer of 2019 [1].As a highly urbanized city in the subtropical area, Hong Kong also had a record of 35.1 °C in summer 2019 (data obtained from the Hong Kong Observatory) (Fig. 1).The recorded highest day temperature in summer months has an increasing trend.
Printable Thermochromic Hydrogel‐Based Smart Window for …
Hydrogel Smart Windows. In article number 2211716, Xiancai Jiang, Jun Fu, and co-workers report a novel thermochromic hydrogel-based smart window for all-weather building-temperature regulation in diverse climates.The hydrogel smart windows spontaneously transform from transparent to opaque upon temperature changes.
Bilateral passive thermal management for dynamical temperature …
Temperature response simulations validate that this bilateral design achieves 6 °C subambient temperature drop at noontime in the summer and stabilizes its …
