Implementation of GSHP in Mediterranean Climate Part II GSHP in detail

Brainstorming

Conclusions

Collaborations

We are not alone!

Regeocities www.regeocities.eu

Same objectives

Same target groups

Co-funded for EU

GroundMed www.groundmed.eu

Technical Guidelines

Geotrainet Training online

Partners & Target Group

Country and

Partner

City or Region

Spain (AIDICO

and UPV)

Region: Valencia region, Galician región City: Valencia

France (BRGM) Region Centre City: Orleans

Deliverables

Report with laws and regulation in Europe

Report with national laws Spain

France

Good practice document

Consolidated Database of new GSHP

Free courses and seminars

More

GroundMed

GroundMed

Partners

GroundMed

Objective:

Demonstrate SPF5 for Mediterranean climate

Resources

Demosites

Technical Guidelines

Monitoring Data

Technical Issues

Overview

Exterior Circuit

Heat Pump

Interior Circuit

Optimization Strategies

Overview

Exterior Circuit BHE - Drilling External Pump

HP Technology Refrigerant Heat Exchangers

Interior Circuit HVAC Internal Pump Buffer Tank

Optimization Strategies Monitoring Temperature Compensation Geocooling

Decoupling Tank Variable Speed Pumps PCM Tank

Overview

BHE - Drilling

Types HE

Open Loop

Closed Loop

Horizontal

Vertical

BHE - Drilling

Types of drills

Rotation

Hammer

Others (Laser, Plasma,…)

BHE - Drilling

Rotation Pneumatic Machine

Need of consolidated well

Speed 30m/d

Uses air with foam to extract rocks

Mud Extraction Soft Subsoil

High Speed 20m/h

Risk of polluting underground water with mud

Cheap

BHE - Drilling

Hammer

Pneumatic hammer Fast speed

For hard rocks

No risk for underground water

Sonic hammer Less residue

Not really extended yet

Expensive

BHE - Drilling

Mud Extraction

BHE - Drilling

Considerations

Consolidate well

Inserting sand, concrete or bentonite

U-Pipes – HDPE

BHE - Drilling

Balance Heat and Cooling

BHE - Drilling

Balance Heat and Cooling

External Pump

HP Technology

Heat Pump Electrical

Gas

Compressor Single

Tandem

Inverter

Type Swing

Scroll

Refrigerant

Carnot

Refrigerant

Carnot

R22

R134a

R410a

Heat Exchangers

Heat Exchangers

Heat Exchangers

Braze plate HE

Plate and Gasket HE

Heat Exchangers

Fouling and clogging

Internal Pump

Buffer Tank

Helps avoiding to use the HP irregularly.

HVAC

Low temperature!

Optimization Strategies

Select a low operating temperature for heating (35 -40 °C) Select a high operating temperature for cooling (8 –10 °C) If possible, use temperature compensated set points Consider heat pump capacity and capacity steps, consider

hybrid system Design the system carefully for a low total heating/cooling

load with some care to take for considering the balance between heating and cooling load for the ground source,

Design carefully the hydraulic system with an adapted control pump strategy to save energy because of auxiliary energy consumptions

Design BHE for high/low temperature, low pressure loss and low thermal resistance

Monitoring

Monitoring

Temperature Compensation

Temperature Compensation

Geocooling

Geocooling

Decoupling Tank

Optimal Water Flow Rate

Optimal Delta T

Variable Speed Pumps

Variable Speed Pumps

IC and EC Pumps

Optimization

PCM Tank

Phase Change Materials

To use it in peak loads

Avoid Expensive Tariff

Homework

Read GroundMed Guidelines

http://www.groundmed.eu/uploads/media/Deliverable_9.8_Design_Guides_rev2.pdf

Administrative Issues Laws and regulations Europe Spain & France Example: Stockholm Regeocities Data Base proposal

Europe

Initial Situation

Europe

Laws

Europe

Administrative procedure Realizing a geothermal project requires a

variety of different permits.

Complex, long, and sometimes unnecessary burdensome procedures can significantly delay project development and investment in the geothermal sector.

Though having several competent administrative bodies to assess an application for geothermal licenses is fair, a one stop-shop process should be the rule for each phase of a project.

Europe

Planning The RES Directive also requires member states to

recommend to all actors, in particular local and regional administrative bodies, to ensure equipment and systems are installed for the use heating and cooling from renewable energy sources when planning, designing, building and renovating residential (or industrial) areas.

Technical Specifications Member states should clearly define any technical

specifications which must be met by renewable energy equipment and systems, including SGE systems, in order to benefit from support schemes (Art. 13 (2) of the RES Directive).

Information and Training Lack of awareness and information as well as shortage of

skilled workers is one of the market failures preventing the further market uptake of SGE. Article 14 of the RES Directive addresses these issues.

Europe

Calculation of renewable information from heat pumps A heat pump is a device allowing the

transformation of heat from a lower temperature level to a higher one, by using external energy.

Promotion of renewable energy and energy efficiency in buildings. EPB

Eco-design and energy labelling Heat pumps (including GSHP) are covered under

both Ecodesign and energy labelling legislation, which are two of the most effective policy tools in the area of energy efficiency.

France & Spain

National Building Codes France: Thermal Regulation of 2012 for new

constructions ( RT2012) give Maximal Consumption of primary energy for the heating, the domestic hot water, the cooling, the lighting and the auxiliaries.

Spain: in the Technical Code of Construction there are requirements related to renewable energies, exclusively for the production of hot water, in most of the case the option for fulfilling the requirement (60% of the HDW must be provided by renewable systems) is achieved by means of installing thermo-solar panels which are generally regulated with local laws, as for example the “Ordenanza Municipal de Captación Solar para Usos Térmicos”.

France & Spain

National Building Codes

France: Professionals considered that used calculation are not favorable to the GSHP. No specific goal for SGE.

Spain: Lack of clear specifications, only HW considered.

France & Spain

Tools

France & Spain

Summary

No monitoring is mandatory in both countries

France & Spain

Summary

France & Spain

Summary

France & Spain

National report

France: http://regeocities.eu/wp-content/uploads/2012/12/REGEOCITIESFrenchReport_final.pdf

Spain: http://regeocities.eu/wp-content/uploads/2013/09/Spanish-National-report_October-2012_SP.pdf

Example: Stockholm

Online application for end-users

Regeocities resource

Laws and regulations for the city of Stockholm National legislation Borers sent the information that is required by law

SFS 1985:245 (drilling Protocol) to the geological national service so that they have the information from the probe

When installing a geothermal heat pump is necessary to notify the municipal panel However, the municipality may have ordinances that

prescribe that municipal authorization is also required for all of the installation for some of its parts where aspects should protect health or environmental.

Residents have the right to express their points of view if drilling is close to their property or if the system may interfere with the operation of their own geothermal systems.

Who can make the request online? Applicants wishing to apply for the registration of the

online installation must ensure that the installation complies with the following requirements:

Closed loop BHE 1 probing or drilling There are no other wells on the property All wells, including inclined probes, rest inside of limits of

the installation property It will give service to a single building The capacity of the installed heat pump is less than 20 kW

In the case that does not meet one of these requirements

it would be necessary to make the request by means of paper formats

Before filling the request

To obtain permission to drill in the city of Stockholm is required that:

The drilling company must be certified as Drillers by SITAC

The drilling and the installation must comply with the Guide "Normbrunn-07", a protocol where the steps are specified for a drilling

Consult to companies that install systems in the subsoil to prevent incidents through www.ledningskollen.se

At the same time the city of Stockholm sent their inquiries to: neighbors, if there is, express their opinion on installing Water, gas, telecommunications or distributors of district

companies to know the location of their systems in the area

Pulsa el boton Verde para marcar donde desee perforar

Línea de límites de la propiedad.

Sondeos

próximos

Step 1 – Localization of the well

After inserting a valid property without any BHE the user will be redirected to an interactive map

Si pulsa sobre un sondeo existente

en el mapa, podrá ver el nombre de

la propiedad, la profundidad y el

ángulo del sondeo.

Entrada dondeo

Punto central en sondeos

inclinados

Base de sondeo inclinado

Zona de influencia del sondeo

Zona de influencia de sondeos

próxomos

Localización desconocida de

sondeo

Permisos para edificiación en la

propiedad

Límites de la propiedad

Cuando usted planee el

sondeo deberá decidir la

profundidad y el ángulo

de perforación.

Usted recibirá la

longitud horizontal de

su sondeo (en caso de

que sea con angulo de

perforación) y las

coordenadas de su

punto de sondeo.

Su sondeo y su zona de influencia se

muestran en verde. El circulo rojo tiene un

radio de 10 metros y muestra la distancia

mínima permitida a un sondeo próximo. En el

caso de que la localización de su sondeo esté

muy próxima a otro sondeo cercano recibirá un

mensaje de error para que cambie la

ubicación.

Entrada dondeo

Punto central en sondeos

inclinados

Base de sondeo inclinado

Zona de influencia del sondeo

Zona de influencia de sondeos

próxomos

Localización desconocida de

sondeo

Permisos para edificiación en la

propiedad

Límites de la propiedad

Tanto la entrada del

sondeo como su

proyección en profundidad

deberán estar dentro de

los límites de la propiedad.

En caso contrario recibirá

un mensaje de error

advirtiendo sobre ello.

Entrada dondeo

Punto central en sondeos

inclinados

Base de sondeo inclinado

Zona de influencia del sondeo

Zona de influencia de sondeos

próxomos

Localización desconocida de

sondeo

Permisos para edificiación en la

propiedad

Límites de la propiedad

When placing the borehole correctly,

you will get a message saying that

this is a possible location for your

borehole.

Usted podra continuar su solicitud en este punto pulsando aqui.

Las infraestructuras subterraneas serán comprobadas una vez

enviada su solicitud.

Cuando el emplazamiento sea

correcto recibirá un mensaje

indicandoselo

Entrada dondeo

Punto central en sondeos

inclinados

Base de sondeo inclinado

Zona de influencia del sondeo

Zona de influencia de sondeos

próxomos

Localización desconocida de

sondeo

Permisos para edificiación en la

propiedad

Límites de la propiedad

Next steps in Stockholm regulations and laws GSHP

Size and capacity Refrigerant Pipes and collector Type of heat transfer Energy coverage

Driller and installer Certification number and contact

information Contact information is optional but makes

further steps easier

Contact information of the owner

Financial Issues

Investment

National Incentives

Insurances

Investment

SGE has to compete against aerothermal energy

Main problem, wells. BHE.

COP3 vs COP5

Lifespan

National Incentives

National Incentives

Insurances

In general, all stakeholders involved in the construction sector have their own civil damage insurance. This insurance could occasionally cover any damage or unsatisfactory work related to SGE installation.

Insurances

France has a dedicated system to cover the geological risk of not finding the resource for the ground water heat pumps systems.

Insurances

Citizen information

Misinformation

There is a little information regarding GSHP for the end user.

Almost all people think about deep geothermal energy and doesn’t know what’s SGE.

We must inform end user with understandable concepts.

Information

References

References

www.geopimed.eu

www.regeocities.eu

www.geotrainet.eu

www.groundmed.eu

www.igme.es

www.geoplat.org

www.googlenergy.org