The Effectiveness of the Heat Demand Control based on the Use Control and CHP to the City

2015 ◽  
Vol 50 (3) ◽  
pp. 574-579
Author(s):  
TADASHI SEKIMUKAI ◽  
MIKI MURAKI
Keyword(s):  
Heat Demand ◽  
Demand Control ◽  
The City

Bringing Combined Heat and Power/District Heating to Two UK Cities

1987 ◽  
Vol 201 (3) ◽  
pp. 187-192
Author(s):  
P C Warner ◽  
R A McFadden ◽  
R A J Moodie ◽  
G P White
Keyword(s):  
District Heating ◽  
Field Work ◽  
Combined Heat And Power ◽  
Private Investor ◽  
Heat Demand ◽  
The City

Edinburgh and Belfast are two of the cities where the financial prospects for district heating from combined heat and power (CHP) are being investigated by consortia combining industrial membership (substantially the same for both) with strong local interests; the object is to learn whether city CHP schemes can appeal to the private investor. The paper deals with the historical build-up of interest in CHP in both places, leading to the formation of consortia in response to a government invitation, and the award of grant-in-aid announced in January 1985. It then explains how the two studies have been planned and sets out their content: the key technical and commercial factors, and also the statutory and other more general considerations. The work is well under way, and the paper reports on progress, including field work to ascertain heat demand, the choice of fuels and sites for heat-only sources and for the combined plant, and the sequencing of implementation progressively across the city.

scholarly journals Assigning Energetic Archetypes to a Digital Cadastre and Estimating Building Heat Demand. An Example from Hamburg, Germany

2020 ◽  
Vol 24 (1) ◽  
pp. 233-253
Author(s):  
Ivan Dochev ◽  
Hannes Seller ◽  
Irene Peters
Keyword(s):  
Energy Efficiency ◽  
Model Performance ◽  
Building Stock ◽  
Heat Demand ◽  
Consumption Data ◽  
Construction Type ◽  
Building Heat ◽  
The City ◽  
Source Of Error ◽  
Different Levels

AbstractIn view of the relatively large energy consumption of national building stocks, many cities and municipalities start to prepare energetic building stock models to monitor energy efficiency and plan policies at city or regional scales. In many cases, data on individual buildings is not available. A usual approach to this is the “archetype” approach – classifying the building stock into energetic types (archetypes). This classification is usually based on non-energetic properties available in digital cadastres (construction type, year of construction etc.) and can be a large source of error. We present our research into the difficulties and pitfalls associated with such an approach using the city of Hamburg as an example. In the end, we compare the modelled estimates with consumption data at three different levels to evaluate model performance.

scholarly journals Predictive Optimization of the Heat Demand in Buildings at the City Level

2019 ◽  
Vol 9 (10) ◽  
pp. 1994
Author(s):  
Petri Hietaharju ◽  
Mika Ruusunen ◽  
Kauko Leiviskä ◽  
Marko Paavola
Keyword(s):  
Energy Efficiency ◽  
District Heating ◽  
Short Term ◽  
Indoor Temperature ◽  
Improve Energy Efficiency ◽  
Apartment Buildings ◽  
Heat Demand ◽  
Demand Models ◽  
The City ◽  
Modelling Approach

Easily adaptable indoor temperature and heat demand models were applied in the predictive optimization of the heat demand at the city level to improve energy efficiency in heating. Real measured district heating data from 201 large buildings, including apartment buildings, schools and commercial, public, and office buildings, was utilized. Indoor temperature and heat demand of all 201 individual buildings were modelled and the models were applied in the optimization utilizing two different optimization strategies. Results demonstrate that the applied modelling approach enables the utilization of buildings as short-term heat storages in the optimization of the heat demand leading to significant improvements in energy efficiency both at the city level and in individual buildings.

scholarly journals Mapping Bio-CO2 and Wind Resources for Decarbonized Steel, E-Methanol and District Heat Production in the Bothnian Bay

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8518
Author(s):  
Hannu Karjunen ◽  
Eero Inkeri ◽  
Tero Tynjälä
Keyword(s):  
Wind Power ◽  
Steel Production ◽  
Heat Pumps ◽  
Paper Mills ◽  
Heat Demand ◽  
Moderate Power ◽  
Steel Sector ◽  
The Baltic ◽  
Bothnian Bay ◽  
The City

Hydrogen is a versatile feedstock for various chemical and industrial processes, as well as an energy carrier. Dedicated hydrogen infrastructure is envisioned to conceptualize in hydrogen valleys, which link together the suppliers and consumers of hydrogen, heat, oxygen, and electricity. One potential hydrogen valley is the Bay of Bothnia, located in the northern part of the Baltic Sea between Finland and Sweden. The region is characterized as having excellent wind power potential, a strong forest cluster with numerous pulp and paper mills, and significant iron ore and steel production. The study investigates the hydrogen-related opportunities in the region, focusing on infrastructural requirements, flexibility, and co-operation of different sectors. The study found that local wind power capacity is rapidly increasing and will eventually enable the decarbonization of the steel sector in the area, along with moderate Power-to-X implementation. In such case, the heat obtained as a by-product from the electrolysis of hydrogen would greatly exceed the combined district heat demand of the major cities in the area. To completely fulfil its district heat demand, the city of Oulu was simulated to require 0.5–1.2 GW of electrolyser capacity, supported by heat pumps and optionally with heat storages.

scholarly journals Flexibility Potential of Space Heating Demand Response in Buildings for District Heating Systems

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2874 ◽  
Author(s):  
Dmytro Romanchenko ◽  
Emil Nyholm ◽  
Mikael Odenberger ◽  
Filip Johnsson
Keyword(s):  
Heat Generation ◽  
Demand Response ◽  
Heat Supply ◽  
Residential Buildings ◽  
District Heating ◽  
Space Heating ◽  
Building Stock ◽  
Heat Demand ◽  
The Cost ◽  
The City

Using an integrated demand-supply optimization model, this work investigates the potential for flexible space heating demand, i.e., demand response (DR), in buildings, as well as its effects on the heating demand and the operation of a district heating (DH) system. The work applies a building stock description, including both residential and non-residential buildings, and employs a representation of the current DH system of the city of Gothenburg, Sweden as a case study. The results indicate that space heating DR in buildings can have a significant impact on the cost-optimal heat supply of the city by smoothing variations in the system heat demand. DR implemented via indoor temperature deviations of as little as +1 °C can smoothen the short-term (daily) fluctuations in the system heating demand by up to 18% over a period of 1 year. The smoothening of the demand reduces the cost of heat generation, in that the heat supply and number of full-load hours of base-load heat generation units increase, while the number of starts for the peaking units decreases by more than 80%. DR through temperature deviations of +3 °C confers diminishing returns in terms of its effects on the heat demand, as compared to the DR via +1 °C.

scholarly journals Enabling Demand Side Management: Heat Demand Forecasting at City Level

Materials ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 202 ◽  
Author(s):  
Petri Hietaharju ◽  
Mika Ruusunen ◽  
Kauko Leiviskä
Keyword(s):  
Energy Efficiency ◽  
Demand Forecasting ◽  
Demand Side Management ◽  
Measurement Information ◽  
Demand Side ◽  
Demand Forecast ◽  
Building Stock ◽  
Improve Energy Efficiency ◽  
Heat Demand ◽  
The City

Implementation of new energy efficiency measures for the heating and building sectors is of utmost importance. Demand side management offers means to involve individual buildings in the optimization of the heat demand at city level to improve energy efficiency. In this work, two models were applied to forecast the heat demand from individual buildings up to a city-wide area. District heating data at the city level from more than 4000 different buildings was utilized in the validation of the forecast models. Forecast simulations with the applied models and measured data showed that, during the heating season, the relative error of the city level heat demand forecast for 48 h was 4% on average. In individual buildings, the accuracy of the models varied based on the building type and heat demand pattern. The forecasting accuracy, the limited amount of measurement information and the short time required for model calibration enable the models to be applied to the whole building stock. This should enable demand side management and lead to the predictive optimization of heat demand at city level, leading to increased energy efficiency.

Hospitals: N.Y. Appellate Court Denies Move to Privatize Public Hospital

1999 ◽  
Vol 27 (2) ◽  
pp. 202-203
Author(s):  
Robert Chatham
Keyword(s):  
New York ◽  
New York City ◽  
York City ◽  
Public Health System ◽  
Municipal Hospital ◽  
The Public ◽  
Public Benefit ◽  
For Profit ◽  
Benefit Corporation ◽  
The City

The Court of Appeals of New York held, in Council of the City of New York u. Giuliani, slip op. 02634, 1999 WL 179257 (N.Y. Mar. 30, 1999), that New York City may not privatize a public city hospital without state statutory authorization. The court found invalid a sublease of a municipal hospital operated by a public benefit corporation to a private, for-profit entity. The court reasoned that the controlling statute prescribed the operation of a municipal hospital as a government function that must be fulfilled by the public benefit corporation as long as it exists, and nothing short of legislative action could put an end to the corporation's existence.In 1969, the New York State legislature enacted the Health and Hospitals Corporation Act (HHCA), establishing the New York City Health and Hospitals Corporation (HHC) as an attempt to improve the New York City public health system. Thirty years later, on a renewed perception that the public health system was once again lacking, the city administration approved a sublease of Coney Island Hospital from HHC to PHS New York, Inc. (PHS), a private, for-profit entity.

ASHA Convention 2013

ASHA Leader ◽  
2013 ◽  
Vol 18 (7) ◽  
pp. 46-48
Keyword(s):  
Ice Cream ◽  
Annual Convention ◽  
The City ◽  
Rich History

This year's Annual Convention features some sweet new twists like ice cream and free wi-fi. But it also draws on a rich history as it returns to Chicago, the city where the association's seeds were planted way back in 1930. Read on through our special convention section for a full flavor of can't-miss events, helpful tips, and speakers who remind why you do what you do.

App it Up in the City of Stars

ASHA Leader ◽  
2017 ◽  
Vol 22 (7) ◽  
Author(s):  
Sean Sweeney
Keyword(s):  
The City
Sign in / Sign up

Export Citation Format

Share Document