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Thoroughly revised, this book provides the reader with an understanding of the principles and practices of testing and balancing (TAB) heating, ventilating, and air conditioning (HVAC) air and water systems. For the novice and the experienced testing and balancing technician, it is a field reference book of procedures, equations, and information tables. Divided into five parts, Part I has general and specific balancing procedures for constant air volume systems, variable air volume systems, return air systems, and fans and fan performance. Part II covers testing and balancing fume hood systems and cleanrooms, commissioning HVAC systems, centrifugal pumps and pump performance, analog and digital controls and water balancing procedures using flow meters, system components, and temperatures. Part III covers fans, pumps, air distribution, water distribution, motors, electrical, fluid flow, psychrometrics, refrigeration, and instrument usage and care. Part IV includes equations and tables. New to this edition, Part V has information and additional test and balance procedures and graphics for chapters 1-7 and 13-14. TAB Data and Test forms are in the new addendum as well. • Provides the readers with revised information about the principles and practices of testing and balancing (TAB) heating • Represents a field reference guide for both the novice and experienced testing and balancing technician • Includes a new section with information and additional test and balance procedures and graphics

'Solar Heating and Cooling Systems' provides comprehensive coverage of this modern energy issue from both a scientific and technical level that is based on original research and the synthesis of consistent bibliographic material that meets the increasing need for modernization and greater energy efficiency to significantly reduce CO2 emissions. Ioan Sarbu and Calin Sebarchievici present a comprehensive overview of all major solar energy technologies, along with the fundamentals, experiments, and applications of solar heating and cooling systems.

Cold In-place Recycling (CIR) has been widely used in the world since it is easy to apply it in the field at a low cost. However, it is not normally used as a surface layer as a result of its inconsistent quality due to an excessive amount of fine aggregates pulverized during the milling process. Hot In-place Recycling (HIR) can retain the original shape of the aggregates, but it often produces a large amount of Volatile Organic Compounds (VOCs). Therefore, a third in-place recycling technique is introduced in this paper: Warm In-place Recycling (WIR). The WIR technique overcomes the limitations of both CIR and HIR techniques by lowering a heating temperature while adding a Tetraethylenepentamine (TEPA)/Soybean/SBS additive. To identify the effect of the additive on the RTFO-aged binder, viscosity and dynamic modulus values were measured at different temperatures. Based on Hamburg Wheel Tracking (HWT) and Disc-Shaped Compact Tension (DCT) tests, the additive improved the moisture susceptibility and low temperature cracking resistance. The indirect infrared heating equipment reduced the emission by lowering the pavement surface heating temperature by 20 °C from 140 to 120 °C. Compared with the heating at 140 °C, the LPG usage for heating at 140 °C was lowered by 21%. The proposed WIR equipment with an additive would revolutionize the in-place recycling practices.

Based on the local climate in Lianyungang, this paper analyzes the local heating demand, a comprehensive comparison of mainstream heating equipment and terminal forms, and analysis and discussion, respectively. By simulating the heating situation in Lianyungang in winter, the heating cost of different equipment in Lianyungang in winter is calculated and combined with the operation of existing projects, and the differences in cost, use, installation, and maintenance of different heating equipment are compared. Finally, the most suitable heating form for Lianyungang users is summarized by integrating theoretical data and actual situations.

In order to reduce greenhouse gas emissions and decrease dependency on depleting fossil fuel resources the shift to a renewable energy system is necessary. District heating and cooling systems are a viable solution to provide heat and cold in urban environments. Renewable heat and cold sources that may get incorporated in future urban energy systems will not provide the same high temperature output as current fossil fuel fired systems. Fifth generation district heating and cooling (5GDHC) systems are decentralized, bi-directional, close to ground temperature networks that use direct exchange of warm and cold return flows and thermal storage to balance thermal demand as much as possible. 5GDHC offers a way to incorporate low temperature renewable heat sources including shallow geothermal energy, as well as reduce total demand by recuperating generated heat from cooling and generated cold from heating. The large scale of 5GDHC allows for optimal design of technical parts like heat pumps and thermal storage vessels, while increasing overall system efficiency by incorporating a large variety of supply and demand profiles. We provide a definition for 5GDHC and show how this concept differs from conventional district heating systems. The Mijnwater system in Heerlen, the Netherlands is showing what a city-level 5GDHC system can look like.

Plate heat exchanger is a type of heat exchanger that uses corrugated metal plates to transfer heat between two fluids. The plate corrugations are designed to achieve turbulence across the entire heat transfer area thus producing the highest possible heat transfer coefficients while allowing close temperature approaches. Subsequently, this leads to a smaller heat transfer area, smaller units and in some cases, fewer heat exchangers. In this work, an application for thermal and hydraulic computations of plate heat exchangers had been developed using Sharp Develop, an open source programming platform. During the development process, several literature methods and correlations for calculation of heat transfer coefficient and pressure drop in a plate heat exchanger have been tested and the selected four methods: Martin, VDI, Kumar and Coulson and Richardson have been incorporated into the software. The structure of the software is visually presented through several windows: a window for inserting input data, windows for showing the results of computation by each of the methods, a window for showing comparative analysis of the most important computation results obtained by all of the used methods and a help window for demonstrating the working principle of plate heat exchanger. Keywords: plate heat exchanger, heat transfer, pressure drop, software. Plocasti razmenjivaci toplote su tip aparata koji danas nalazi veoma široku oblast primene, od prehrambene i hemijske industriji do elektroenergetskih postrojenja. Osnovni konstruktivni element ovih aparata je slog orebrenih metalnih ploca. Orebrenja na plocama su tako dizajnirana da omogucavaju postizanje turbulentnog strujanja duž cele površine za toplotnu razmenu, cime se postižu najviši moguci koeficijenti prenosa toplote pri relativno maloj razlici temperatura fluida. Ovo dovodi do manje potrebne površine za toplotnu razmenu, manjih dimenzija aparata i, u nekim slucajevima, manjeg broja razmenjivaca toplote. Pored odlicnih karakteristika u pogledu prenosa toplote, imaju i brojne druge prednosti u odnosu na najcešce korišcene razmenjivace toplote sa cevnim snopom i omotacem: lako se sastavljaju i rastavljaju radi cišcenja i popravki, površina za toplotnu razmenu se lako može menjati promenom broja ploca u slogu, mogu raditi pri vrlo malim razlikama temperature fluida koji ucestvuju u toplotnoj razmeni, a stvaranje one-cišcenja je manje izraženo zbog vecih brzina strujanja i bolje distribucije toka fluida. Osnovni problem pri termohidraulickom proracunu plocastih razmenjivaca toplote je ogranicen broj literaturnih korelacija, posebno onih koje bi imale širi opseg primenljivosti, što je i razumljivo obzirom na razlicite geometrije i tipove profila ploca koji se javljaju kod ovih aparata. U ovom radu je testirano nekoliko literaturnih metoda za proracun koeficijenta prelaza toplote i pada pritiska u plocastom razmenjivacu toplote sa orebrenjem tipa \"riblja kost\" i dobijeni rezultati su uporedeni sa eksperimentalno odredenim vrednostima za koeficijent prelaza toplote i pad pritiska. Izabrane su cetiri metode koje su ugradene u programski paket za termicki i hidraulicki proracun plocastog razmenjivaca toplote razvijenog u okruženju Sharp Develop. Ovaj programski paket za termicki i hidraulicki proracun plocastog razmenjivaca toplote koristi sledece cetiri metode proracuna: Martinov metod, VDI metod, Kumarov metod i metod Kulsona i Ricardsona (Coulson-Richardson). Razvijeni softver je vizuelno prikazan preko prozora za unos ulaznih podataka, prozora za prikaz rezultata proracuna dobijenih svakom od metoda, prozora na kome je prikazano poredenje najbitnijih rezultata proracuna za sve korišcene metode i pomocnog prozora za prikaz principa rada plocastog razmenjivaca toplote. Nakon izbora metoda, razvoja i verifikacije softvera pristupilo se njegovoj primeni na dva industrijska razmenjivaca toplote. Kljucne reci: Plocasti razmenjivac toplote * Prenos toplote * Pad pritiska * Programski paket