Jérôme Adnot

THE INPUT/OUTPUT METHOD FOR SDHWS CHARACTERISATION

ABSTRACT A test method for individual SDHW Systems developed by the JRC Ispra is studied in order to develop an extrapolation method for the prediction of the system long term performance under any climate and load condition.

Synergy Between On-the-job Training and Academic Education in the Case of a Newly Created Part-time Engineering Curriculum

SUMMARY Part-time vocational engineering curricula provide a response to a number of present-day demands related to economic developments. Their aim is to transform experienced higher technicians into engineering managers through a combination of knowledge derived from past experience in working positions and in new situations, with courses and activities in an academic institution. Synergy between the two streams can be achieved by specific means such as dual tutoring by the academic institution and the company, training in the capacity of synthesis regarding technological developments in progress, observation and analysis by the learner of his/her own work station, field research on team management and the writing of a final professional dissertation in the company.

Impact of Smart EVs on Day-Ahead Prices in the French Market

Publisher Summary The objective of this chapter is to evaluate the combined impact that the introduction of EVs and the changes in generation fleet would have on day-ahead electricity prices over the next 10–15 years. Most studies on the impact of wind power and of the introduction of EVs on electricity prices have assumed that the supply curve was equal to the full merit order and that demand is inelastic. The approaches that are used for predicting the impact of changes in supply and demand for power on day-ahead prices depend on the size and complexity of the system, the way in which prices are determined, and the information that is available to the public. The primary aim of this chapter is to present a new method for simulating the aggregate offer to buy and sell power on the day-ahead market without these restrictive assumptions.

Design and performance of an original French solar heating system: direct solar floor heating

Direct Solar Floor Heating ( DSFH) is an original solar heating system made of a set of water circulation pipes embedded in a concrete floor which is directly connected to the solar collectors without heat exchanger or any other storage. The concrete slab is thick enough to be used as storage. Performance of many installations in France have been measured and give satisfaction. Furthermore, a simplified sizing method has been proposed. We set forth simulations with EMGP2, in order to improve both of these results and to optimize the economic and technical performances of the system. An optimum size which the method did not anticipate is indeed found if we correctly took into account the function of the floor in the system. Two points have to be supervised: comfort and regulation for which some preliminary informations are given. A methodology is proposed in order to analyse bare results from measured data.

VALIDATION DE LA METHODE ESM2 DE CALCUL DES PERFORMANCES THERMIQUES DES SYSTEMES SOLAIRES ACTIFS DE PRODUCTION D'EAU CHAUDE

Abstract A new analytical design method for Active Solar Hot Water Systems was developed and validated against the European detailed simulation model EMGP2. The main features of this method called ESM2 (for European Simplified Method 2) is the integration of storage thermal stratification effects through a simple analytical form and the use of solar radiation data under the form of cumulative frequency curves, which enables a very fast simulation of those systems. The validation of the ESM2 method was performed for both the calculation of daily performance and of long term performance (yearly) considering a medium sized system. The results show a good reproduction of thermal performance (less than 10% of loss of accuracy on the computation of yearly useful energy) and moreover a good reproduction of the sensitivity to the variations of the main sizing parameters. Some limits of use of the method are found. The most important one is related to the type of usage of hot water: whenever the whole content of t...

SOLAR THERMAL ACTIVE SYSTEMS: FROM CLOSED FORM MODELS TO SIMPLE SIZING RULES FOR COLLECTOR CIRCUITS

ABSTRACT A simple closed-form model of thermal solar active systems (Space or Water heating) is presented. It deals both with fully-mixed storage and perfectly stratified storage and enables a better understanding of physical phenomena occurring within the system (e.g. low collector flow-rate effects). Direct application of this model makes it possible to establish partial sizing rules for the system components: storage capacity, storage insulation, pipe insulation, heat-exchanger area, collector flow-rate.